Ironically, I've had 2 seedlings re-bloom for me this year.
This one had it's last re-bloom on August 2:
Game Face x Born to Be Wild (DDD19):
And this one still has 1 more bloom to open:
Magic of Oz x Lily Munster (ZZZ19):
I doubt any others (seedling or named) will bloom after that last one, but you just never know!