apologies for the late reply, but I was extremely busy of late.
As I got the original files of the game (courtesy of Coleman Charlton), I can give you also the original fonts, though the cards were made on an apple machine and I use Indesign on windows. This matters a bit, as it seems Apple has its own fonts (the bastards!) and they are automatically substituted when opening the files on windows. So if you want to be precise, you'll have to get the Apple fonts (especially the Palatino).
MP = TNR regular 11 (12 for character)
Title = Palatino bold 10 (8 for hero sites)
Type = TNR regular 7
Mind/DI = ICE used their specific font, but it amounts to Lithos bold 8/6
Prowess/Body = TNR regular 9. nb. On hero resources it is actually smaller than on minion resources.
Artist = TNR regular 5
Copywright = Helvetica regular 4 (you could substitute this with Arial)
Draw = Lithos bold 5 (Lithos black on minion resource; can also use Lithos pro, it all amounts to the same)
Card text = TNR regular at largest font 7; this varies per amount of text of course
flavour = TNR regular 6 (largest)
the real trouble is to find the correct line spacing for the card/flavour text. If you use auto-spacing, at least in Indesign, the spacing is too wide. It is counter-intuitive, but more space can actually make a card more difficult to read, as the background will occupy your eyes more (this especially for darker templates and the sites). There is an optimal spacing for various fontsizes.
Another thing to take into account, ICE was really sloppy in the design of the cards (under time-pressure I assume), and there is no true consistency. So as re-creators one can afford to deviate a bit from the originals here and there, because there are simply no 100% correct examples.
For example, for MENE I have increased fontsizes a bit here and there, because readability of the card is more important than sticking to original card design. They are, after all, playing cards.
Stone-age did not end because man ran out of rocks.