Rogue Trader Army
Warhammer 40K
There are no rules for fielding a Rogue Trader army, so the army is not battle-forged and we'll mainly be using Open Play rules. But my gaming group plans to attempt homebrew rules. Not to mention that the eventual use of Necromunda models will require the heavy homebrew effort of creating 40K datasheets for them.
Putting units/models together below into "squads" is just organizational. I've also added in the squad titles which keyword synergies can connect together units contained in different squads, making these squads ideally deployed adjacent to each other.
Elucidian Starstrider Squad
(Adeptus Ministorum & Adeptus Machanicus)

Rogue Trader, Faollgael, Mistress of the Black Flag, Da Feathered Deff

Lectro-Maester

Rejuvenat Adept

Winged Skull Death Cult Assassin

Elucidian Starstrider Voidmaster

Elucidian Starstrider Voidsman

Elucidian Starstrider Voidsman

Elucidian Starstrider Voidsman

Elucidian Starstrider Voidsman

Elucidian Starstrider Canid
Drake Squad
(Astra Militarum)

Rogue Trader

Rogue Trader

Navigator

Imperial Robot

Ogryn Bodyguard

Ogryn Bodyguard
Taddeus Squad
(Adeptus Ministorum / Astra Militarum)

Ministorum Priest

Primaris Psyker

Commissar

Crimson Cardinals Crusader

Missionary Zealot

Catachan Ogryn

Ratling Sniper

Ratling Spotter
Draxus Squad
(Deathwatch)

Radical Ordo Xenos Lord Inquisitor

Radical Ordo Xenos Inquisitor

Ordo Xenos Inquisitor

Mentor Legion Watch Master

Ultramarine Chaplain

Blood Raven Codicier Librarian

Alaitoc Farseer

Jokaero Weaponsmith

Sslyth Bodyguard

Solitaire
Donatus Veterans Squad
(Deathwatch)

Ultramarine Sternguard Veteran Watch Sergeant

Space Wolf Blood Claw

Imperial Fist Devastator

Iron Hand Sternguard Veteran

Dark Angel Company Champion

Raven Guard Vanguard Veteran

Flesh Tearer Assault Marine Sergeant

Salamander Terminator

White Scar Biker Sergeant
Stern Infiltration Squad
(Adeptus Ministorum / Astra Militarum)

Daemonifuge, Thrice-born, Order of Our Martyred Lady Seraphim

Knight of Shadows of the Bloody Tears, The Pariah

Sentinel of the Stars, Shield of Alaitoc, The Wayforger, Path of the Outcast Alaitoc Ranger

Biel-Tan Ranger

Kroot Tracker

Adamus Assassin

Vindicare Assassin

Callidus Assassin

Vanus Infocyte Assassin

Culexus Assassin

Venenum Assassin

Vindicare Assassin

Eversor Assassin

Catachan Devil
Gaunt Squad
(Astra Militarum)
Daedalosus Squad
(Adeptus Mechanicus)

Colonel-Commissar

Tanith Colonel

Tanith Major

Tanith Scout-Sergeant

Tanith Master Sniper

Tanith Trooper
Ever-Faithful Squad
(Adeptus Mechanicus)

Technoarcheologist

Cybernetica Datasmith

Servitor

Technomandrite of Magistrakh Plasmancer

Zoat

The Unstoppable, Ever-Faithful Kastelan Robot

Last of the Grim Shepherds, Alabastex Schism, Ever-Faithful Kastelan Robot
Guardians of the Heroine Unbowed Squad

Novitiate Superior

Novitiate Condemnor

Novitiate Dialogus

Novitiate Hospitaller

Novitiate Reliquarius

Novitiate Preceptor

Novitiate Exactor

Novitiate Duelist

Novitiate Penitent

Novitiate Purgatus
The Inquisitor's Raiders Squad
(Astra Militarum)
Death Dealers Squad
(Astra Militarum)

Cadian Kasrkin Sergeant

Cadian Kasrkin Recon-trooper

Cadian Kasrkin Vox-trooper

Cadian Kasrkin Combat Medic

Cadian Kasrkin Demo-Trooper

Cadian Kasrkin Sharpshooter

Cadian Cadian Kasrkin Gunner

Cadian Kasrkin Gunner

Cadian Kasrkin Gunner

Cadian Kasrkin Gunner

Death Korps of Krieg Sergeant Veteran Guardsman

Death Korps of Krieg Hardened Veteran Guardsman

Death Korps of Krieg Comms Veteran Guardsman

Death Korps of Krieg Medic Veteran Guardsman

Death Korps of Krieg Spotter Veteran Guardsman

Death Korps of Krieg Sniper Veteran Guardsman

Death Korps of Krieg Gunner Veteran Guardsman

Death Korps of Krieg Gunner Veteran Guardsman

Death Korps of Krieg Gunner Veteran Guardsman

Death Korps of Krieg Trooper Veteran Guardsman
Voidbreachers Squad
(Aeronautica Imperialis)
Arco-Flagellant Squad
(Adeptus Ministorum)

Navis Sergeant-at-Arms

Navis Surveyor

Navis Void-Jammer

Navis Hatchcutter

Navis Endurant

Navis Grenadier

Navis Axejack

Navis Gunner

Navis Armsman

Navis Armsman

Navis C.A.T. Unit

Navis Gheistskull

Arco-Flagellant Endurant

Arco-Flagellant

Arco-Flagellants
Farstalker Squad
Ghostmoons Squad

Kroot Kill-Broker

Kroot Cold-Blood

Kroot Tracker

Kroot Long-Sight

Kroot Bow-Hunter

Kroot Pistolier

Kroot Cut-Skin

Kroot Heavy Gunner

Kroot Stalker

Kroot Warrior

Kroot Hound

Kroot Hound

Shas'ui Ka'mais Pathfinder

Shas'la Ka'mais Blooded Pathfinder

Shas'la Ka'mais Communications Specialist Pathfinder

Shas'la Ka'mais Medical Technician Pathfinder

Shas'la Ka'mais Transpectral Interference Pathfinder

Shas'la Ka'mais Drone Controller Pathfinder

Shas'la Ka'mais Assault Grenadier Pathfinder

Shas'la Ka'mais Marksman Pathfinder

Shas'la Ka'mais Weapons Expert Pathfinder

Shas'la Ka'mais Weapons Expert Pathfinder

MB3 Recon Drone

Gun Drone

Shield Drone
Star Reavers Squad

Anhrathe Voidscarred Felarch

Anhrathe Voidscarred Way Seeker

Anhrathe Voidscarred Soul Weaver

Anhrathe Voidscarred Kurnite Hunter

Anhrathe Voidscarred Fate Dealer

Anhrathe Voidscarred Shade Runner

Anhrathe Voidscarred Starstorm Duellist

Anhrathe Voidscarred Gunner

Anhrathe Voidscarred Gunner

Anhrathe Voidscarred Heavy Gunner
Flash Gitz Squad
(Freebooterz)

Freebooter Flash Git Kaptin

Freebooter Flash Git

Freebooter Flash Git

Freebooter Flash Git

Freebooter Flash Git
Kunnin' Gitz Squad

Freebooter Kommando Nob

Freebooter Kommando Dakka Boy

Freebooter Kommando Comms Boy

Freebooter Kommando Snipa Boy

Freebooter Kommando Slasha Boy

Freebooter Kommando Rokkit Boy

Freebooter Kommando Breacha Boy

Freebooter Kommando Burna Boy

Freebooter Kommando Scuba Boy

Freebooter Kommando Boy

Freebooter Kommando Grot

Freebooter Kommando Bomb Squig
Credo Squad
(Escher)

Necromundan Rebel Lord

The Matriarch’s Blade, House Escher

Caryatid

Necromundan Bounty Hunter

Necromundan Bounty Hunter

Necromundan Bounty Hunter

Necromundan Hive Scum

Necromundan Hive Scum

Necromundan Hive Scum

Necromundan Rogue Doc
Merdena Squad
(Orlock)

Necromundan Bounty Hunter, House Orlock Road Boss

Necromundan Cyber-Mastiff

Necromundan Bounty Hunter

Necromundan Bounty Hunter, Jardlan Nomad Hunter

Necromundan Bounty Hunter

Necromundan Bounty Hunter

Necromundan Bounty Hunter, House Orlock Outrider Quad [Iron Rider: Big Pete Plainsman]

Necromundan Ammo-Jack
Stranger Squad
Hark Squad
(Cawdor)

Necromundan Bounty Hunter, Outcasts Leader

Necromundan Palanite Enforcer Scrutinator-Primus

Necromundan Palanite Enforcer Hardcase Cyber-Mastiff

Necromundan Bounty Hunter

Necromundan Bounty Hunter

Necromundan Hive Scum

Necromundan Ammo-Jack

Necromundan Brute Handler

Necromundan Gang Look-out

Necromundan Dome Runner

Necromundan Bounty Hunter

Necromundan Bounty Hunter

Necromundan Bounty Hunter

Necromundan Bounty Hunter

Necromundan Bounty Hunter

Necromundan Bounty Hunter

Necromundan Bounty Hunter

Necromundan Bounty Hunter, House Cawdor Executioner

Necromundan House Cawdor Hive Scum

Necromundan Rogue Doc
Umbra Infiltration Squad
(Escher)

Necromundan Bounty Hunter

The Master of Whispers, Necromundan Bounty Hunter, House Delaque

Necromundan Bounty Hunter, House Escher Death-Maiden

Necromundan Hive Scum

Necromundan Hive Scum

Necromundan Luther Pattern Excavation Automata

Necromundan Luther Pattern Excavation Automata
Support Squad

Necromundan Slopper

Necromundan Scabber

Necromundan Chem Dealer

Necromundan Relicmonger

Necromundan Beastwrangler

Necromundan Gun-smyth

Necromundan Slopper