I'm from the US, but few of my favorites are. I tend to gravitate to riders whose style I like to watch. Gibo was a favorite over the last several years. Roberto Heras was a favorite too. I'm liking the way Nibali and Kreuziger ride, and Cunego of late. Thor is a big favorite of mine too. I also like David Arroyo, kind of a stealth rider.
Domestically, I'm a big Peter Stetina fan. I also like Mike Creed quite a bit, and support TeamType 1, though I know they've had a lot of internal problems, I like what they stand for.
Though I'm hoping Rahsaan Bahati has a great career, I don't like anything to do with RR, outside of maybe their kit. Ball is a greedy nutcase. He shafted Creed, and owes other people money. Oh, and he doesn't seem to give a rip about doping it seems.
I also like all riders who ride in support of BikePure, regardless of their nation.