Are there clear ideological differences among the leading candidates? Who would be considered most on the right? Who the wettest? Who the most truly pro Brexit? etc.
Michael Gove - another Leave person (betraying his close ally David Cameron), although like BoJo one could argue that this was more a tactical decision than one of commitment. One of the few cabinet ministers to stay fairly loyal to May (or at least, he has stayed out the constant undermining and sniping that many ministers seemed to enjoy) despite them loathing each other on a personal level. Has been an unusually "activist" Environmental Secretary, although his previous reign as a controversial Education Sec means he doesn't have a lot of crossover appeal for the left.
This is not accurate. According to George Osborne in an interview with Alistair Campbell Gove had always been in favour of leaving the EU even when it wasn't a major political issue (hence why Osborne and Gove are still apparently good friends unlike his now toxic relationship with Johnson). Interestingly Osborne also says it was only Gove and himself out of all of Cameron's cabinet at the time that argued against making a referendum Tory party policy despite Gove favouring leaving. He apparently didn't believe that referendums were the right way to conduct democracy as they tend to be extremely polarising. This, you could argue, makes him more perceptive than the rest of the Tory Party combined.
Full interview if you care to watch it:
https://www.youtube.com/watch?v=cqwi3ZRIgKA
