The NASA Astronaut Corps wiki page lists mission assignments for active astronauts:
https://en.wikipedia.org/wiki/NASA_Astronaut_Corps
7/10 from group 23 (2021) are still awaiting assignments. They should all get assigned in the next few years to ISS crews, either on American or Russian vehicles.
A fresh set of ASCANs now seems odd when the ISS is going to start winding down and the future of Artemis and commercial stations is pretty unknown. This seems like such an inflection point, where they could get some of the most interesting missions in decades, or be stuck at a desk while waiting years for some startup to launch their space RV.