During the mission An Honest Day’s Labors you encounter James Langton. The NPC that is James Langton in this mission is different, way different then his Multiplayer version. Its most likely that Red Dead Online chose to reuse him and decided to remake him. This mod replaces the story mode variant with the multiplayer variant of James Langton.
Installation:
Drop the lml folder in your main Red Dead Redemption 2 directory.
OR
If you wanna install it manually just drop the .ymt in your stream folder.
Credits:
EnergiDaan