Golfs are not sports cars. Come on now.
They are not. But when you embarrass a sports car with one, it's a special kind of warm and fuzzy feeling. I drove a GTI for 5 years, and loved it.
I've worked in the auto industry for over 20 years so I've been fortunate to have driven many different cars. It's only my opinion but the GTI/Golf R is probably the best overall sporty car out there, for the price and how people actually use these cars daily. The current Gen is better than my 2013 model (I'm seriously considering getting another one) and is a viable alternative to a real sports car if you need one to "do it all".
Having said that and back to the topic of rwd...
Nissan Z, great sports car and I like that it's older, simpler with less electronics. It's a proven platform with great aftermarket support and reliability. Not very comfortable for everyday use though, but that could be my old age speaking.
Mustang/Camaro...big powerful American beasts, stupid fun but not the greatest reliability. I'm picky on details, fit/finish etc and as fun as those are the quality gives my OCD fits.
BRZ/86...I love driving those, visceral handling and very easy to control with the throttle. A bit slow and next to useless interior space but reliable, look great and are reasonably affordable.
BMWs are great and if you are ok with the higher cost of ownership (I'm not) would be the best IMO if you want a rwd sport car. I've never driven a 2 series but I've driven the 135 and it's a fantastic car, the 2 will be better I would think.