I have caught 89 different ones so far, 2 which are alolan variants of execute and cubone. If you ewvolve one of them you'll have 7 different mon then.
I'm at 32. This is because I lack points for Pokeballs and I'm not very lucky at catching anything. Such is life...
I currently have a team of four: Gastly (my starter), A!Geodude, Growlithe, and A!Vulpix. Nice team setup thus far; if this was my starting team in any of the handhelds I'd be really happy.
Just caught Butterfree and Psyduck, so I'm at 54! soon enough I'll ninja catch up to you people with 70+ aaaa
I got 73 of them by now xD Most of them are different species but I do have a squirtle squad and an army of digletts