(From memory.)How would they themselves know until one dies of natural causes? And there’s only Kal and Kara, right?
There's maybe Millions of them in the bottle city of Kandor, under a red son, in the Fortress, rescued from Brainiac.
Sometimes Argo City is still around.
General Zod, and however many people he has in tow.
Jor-El showed up recently and turned out to be a real Scumbag.
Mon-El, in the Legion of Super Heroes, used to be Kryptonian in the 70s.
Krypto, Beppo and some of the other Super pets are technically Kryptonian.
Laurel Kent looks like a teen in the 31st century, but her mother was Lois Lane.
Christopher Kent was Zod's kid that Clark adopted.