Howdy,
As far as I can tell:
WWI:
1) Tunnelers knife- Special Trench style dagger that saw limited use during W.W. I .
2) Ross bayo. conversion, basic chopped bayonet.
WWII:
1) Various F-S type knives.
2) 1st. Special Service Force- The Case V-42, and Ulster Mountain knife(looks like a large Scout knife).
3)Basic Brush/Bill Hook.
4) Collins #1250 Canadian Bush/Brush knife- large bolo, much like the Brit versions.
Post War- The Russell knife mentioned above.
They also issued the Army/Navy folders through out the war, these are the sheepsfoot, marlin spike knives that sometimes have a can opener. All sorts of handles on these.
The Brits seem to influence the knife choices a bit, so I'd bet you'd see a few British Type - D knives also.
I've seen Canadian M-9 bayonets, as mentioned also.
I forgot the safety raft knives, these look the same as everyone elses.