Sorry for not updating, the next part of The Wrong Doctors is a pig to write. I knew I avoided plot descriptions for a reason. I know what happens, but putting it down is a grind.
1. In the same way McCoy was. There are 5 seasons of Haygarth as current Doctor, the 30th anniversary and then the TV movie in 1996 (and he's not in it as long as McCoy was in OTL's TVM.
2. Delgado and Cuthbertson are the main ones in the UK, followed by Baker and Haygarth. Six vs Seven was a constant fan-battle in the fanzines throughout the 90s. Cuthbertson is the most famous of the classic Doctors thanks to his appearance on Gabriel Baine. Baker is thought of very highly. Haygarth isn't huge in the US as he's not enough of British eccentric. There's a famous clip of an American fan at a convention saying Haygarth isn't as good as Cuthbertson because "he isn't English enough". In Europe, Haygarth is The Doctor but the Eighth Doctor is a popular second place in Germany.