Hi,
In Atomic FE , on AtomicManager on "General" tab you have 2 options to sort rom Alphabetically.
One will sort by rom name (it means name of the rom file , not name of the game)
The other will sort by game name .
These option take effect only if you don't use "Game List" . If you use game list, roms will appear in the order they appear in the list. (ignoring sort options).