1) - FA-30 NM - the neck diameter appears to be smaller than the .30-06's standard .308 dimension.
Those are 1930 National Match. They are Berdan primed. Unless they are handloads in some other caliber, they will have a normal 30 caliber match bullet.
2) - RA 1941 - 300-Z - I've never seen the "300-Z" designation before and don't know which arsenal is "RA".
Those are loaded by Remington in 1941. The headstamp is left over from a British contract. Remington was given permission to use it for ammunition they manufactured for the U.S. The "Z" denotes nitro powder, rather than cordite.
3) - U.S.C.Co. - 18
United States Cartridge Company. 1918. Standard Ball issue
4) - SUPER-X 30-G-1906
Commercial Western ammo. Likely pre-war.
Also, numbers 2 and 3 above have a deep groove machined, pressed or cast into the brass base of the cartridge, apart-from but completely surrounding the primer pocket and I have no idea what its purpose is.
About the ring surrounding the primer pocket - it does not appear to be a crimp ring because it is located way outside the primer pocket. On number 3, above, the space between the primer pocket and the ring-groove has three indentations pressed into it each exactly 120-degrees apart. I have dealt-with primer crimps before and have swagged them out; but all of them have been inside the primer pocket cavity, just inside the pocket's wall. This strange groove is separated from the primer pocket by at least 1/16th of an inch and completely surrounds the pocket. This groove looks like an outer ring on a target, where the primer pocket represents the black center of the target. Any help would be appreciated?
The deep ring crimp was intended to keep the primer from popping out when used in an aircraft machine gun. That would tie up the gun until the plane could land and the gun cleared. The three "stab marks" are additional crimps added for even more security of the primer.