Tema: Official ports of arcade games for Japanese WIN.
So even if most of these are irrelevant thanks to MAME/consoles or due to their low-profile nature I guess it's time we get a proper catalog of what was made in this area for the sake of documentation.
First thing to note is that many of them were released through Mediakite's Yuu-Yuu budget series. This is a label for rereleases of products from other companies, but it seems many of these were originally launched this way. Mediakite also had a series for MD ports. Didn't last for too long, but at least they picked Gunstar Heroes.
There are a lot of these arcade ports for other Asian markets and indeed Cyberfront's SNK titles were based on Taiwanese versions by other companies, if I recall.
It'll be interesting to know with the time which ones of these use emulation, or even MAME, and their accuracy. I'm still to decide if they'll get a place in Postback 2.0, though.