We have had all those boats as classes in the past. Forming a 'new' class requires five boats registered for all five series. Any of these boats are welcome in our "Portsmouth" class. How about AERO RS x's or 420's? Should be easy to form a class, but all are welcome in our Portsmouth class.
Portsmouth includes (partial list)
Hobie Wave(mh)
All boats mentioned above
Vagabond 14
Sweet 16
FJ
Capri 14
Day Sailor
Nacra(mh, various)
Mscow
Pulse 600
Prindle 18-2
Corinthian 19
Oday 19
Snipe
and many others