I think I know who Shadow was in the Drifter cutscene
Okay so spoilers for the Thorn lorebook —
So we know Shin is actually a founder of the Shadows of Yor— and in the cutscene we see the shadow pull out a Thorn and says “You were always so afraid Shin would get you” — now I think Shin Malphur, who is a solar hunter (like our shadow who wear shards of galanor) is this shadow who’s about to shoot drifter. I think this because as he says Shin, he shifts his Thorn in his hand, as like a sarcastic callback to the man with the golden gun red herring — because clearly now we all know Shin like all the Shadows Of Yor use dark and light, so he probably would have a Thorn.
Anyway, that’s my theory. Could also be Uldren like everyone is saying because he is wearing the Prodigal mask which has a reference to Crow, but I feel like that’s impossible because Uldren was never a Shadow of Yor nor did he know the backstory of Drifter and shin (and Drifter calls this clusters man “old friend” too).
That guy, my friend, is Crow. If you look at the Prodigal Hunter mask, it looks exactly like his. Plus the quote for that helmet says that his name is Crow.