These great screencaps have shown us a few different things about the Lost Hunters. Here's what I'm seeing:
1) The Boar bio helmet sticks out a good 1-2" past the back of the top row of dreads on the undermask. No other bio has done this, although it looks like the Ram bio does just a little bit, but not as much as the Boar.
2) I know some of the undermasks for the Lost Hunters were P1 and some were P2 but they also created different ones not seen anywhere else in the movies. The Ram undermask was a P2 undermask in which they shaved the pointy tip of each section around the crown down from the normal P2 point and rounded it off.
3) It looks like the Gort and P1 Lost Hunters were maybe thrown into the movie at the last minute. Both have a full set of bronze P2 armor and both have very close skin patterns to the main P2 costume. They easily could have both been extra main P2 suits they put different heads on, since both those bios are shaped for the standard P1 mask.
Another oddity with those two.... both of them are wearing silver-ish bio helmets when the entire rest of their armor is bronze, like the main P2 suit. They could have painted every Lost Hunter however they wanted, so why were these two the only ones with the mismatched color of bio to armor? Both bios throwbacks from the first movie prop pile? We know the original P1 movie was supposed to be using the Gort, and we saw a painted one on the wall of the prop truck in the P1 behind the scenes, so they already had a silver one, and probably had a few P1 main bios around, so both these Lost Hunters could have gotten them, but why not repaint them to match the rest of the armor they painted for their bodies.......which like I said could have been extra P2 bodies anyway? The other Lost Hunters look more original with body paint schemes and coloration, yet the Gort and P1 Lost Hunters look almost identical. Maybe I'm off with this, but if more pictures were around of the two in better lighting, I could see what the situation really is.