Reminder: I can't guarantee that you'll get accurate ELO ratings for each emulated chesscomputer. For some of them, I know the CPU timing(and therefore playing strength) is not 100% accurate. For example, some of the Mephistos are too fast due to missing wait state(68000 DTACK) emulation.

And I'm sure there are some that have emulation bugs remaining that I don't know of, that affect playing strength. If I encounter a bug(and know how to fix it) I fix it of course. For example, Fidelity CSC had a bug with the bookrom that made it play a weaker opening, that was fixed a year or so ago.