These are patches for xdelta (patching tool for Nintendo DS roms) and are used to patch your EOS rom in-order to play romhacks.

The US patches are for the NA roms of the game, the Xeno ones use a specific dump of the NA rom. Odds are, you'll want to try both of them out if you're unsure. While the PAL ones are for the PAL versions of the game.

Standard is the normal button layout with set moves, while Buttonpatch allows you to have a system similar to Gates and Super where moves are bound to specific buttons.

Roms from the Wii U and other versions of the game will currently not work.