This is your guide.
https://www.cyclinguk.org/cyclists-library/components/transmission-gears/derailleur-gears/shimergo
Basically you could run an 8 speed campa block with 10 speed spacers using a campa rear mech and XT shifters as, as Hamster says, the campa mech needs more cable to pull the...
They are ~2005 Super Cycles reissues, great tyres for when you want the look without the massive price tag! Seem to remember they grabbed a whole bunch of trademarks when they expired in the U.K. Onza, Syncros for a short while and others
Left is a modern ‘logo’ top race, right is a no-logo top race. You can see the height is different on the internal taper bit. It means that the no-logo top race won’t fit the logo headset..
Worth checking as to which theirs will fit.