As far as I know, there are some undumped roms for the m2 system too.
These following games need that 7k eeprom:
btltryst
heatof11
hellngt (clone only. Parent has the eeprom)
totlvice and clones
btltryst is missing the timekeeper dump
heatof11's chd is not only a bad dump but incorrectly named. Should be "703eaa02".
evilnghte shouldn't even be a rom set at all in its current state. EAA for that game was released as "Hell Night". There could be other European versions of that game but I can't confirm.
Some m2 collectors use a program to patch the game discs to bypass the eeprom and/or timekeeper check for game swapping. Idk if that will be of any use or not.