[Winchester_73]

The bayonet with the leather handle and round ball shaped pommel was originally a M1 garand bayonet. It looks like they made this now "fighting knife" from the top portion of the blade. I say this because the fuller goes all the way down to the crossguard, which was not how those bayonets were originally. There is a chance the blade is from another bayonet, and it simply has a M1 garand crossguard, but I think it is an M1 garand bayonet blade.

As for the other bayonets, the small ring bayonets are 1950s era M4 bayonets for the M1 carbine. Leather, rubber and wood handle M4 bayonets are from WWII. After the war, newly produced M4 bayonets had plastic/bakelite handles. The larger ring bakelite handle bayonet is probably a M7 for the M16/AR-15. If you point the plastic handle bayonets straight up, they should be marked on the crossguard. The M1 garand bayonet would have been marked on the ricasso, aka the portion of the blade which is flat and without edge, directly above the crossguard. Since the bayonet does not even have a ricasso, it has been altered.