There is lots of mistakes in the NAOMI FAQ..
1) The NAOMI is either 31.5khz (VGA) or 15.75khz (Standard Res)
2) The NAOMI is never MEDIUM RES (24.80khz), Sega System24, Model 1,2 and 3 are the Med Res boards.
3) Not all games work at the low res setting.
4) Some games require dedicated IO boards and there own control panels.
5) Some games require a GD-ROM and DIMM board to function.
So answer to your questions..
NAOMI is Jamma, via either the CAPCOM or SEGA JVS Jamma board (however sound is included, you'll have to add the connection to your speakers, as the sound is unamplified stereo).
NAOMI will work on an AMIGA monitor only on the low res setting, however it will work on a PC monitor on the hi res setting.