For sleep, yes S3 is not supported on the AMD Ryzen 7040 and Intel Core Ultra. Intel and AMD are moving away from traditional S3.
Recent platforms only support s0ix/s2idle.
You can find the latest status of the FreeBSD implementation here: Implement S0ix low power states and s2idle · Issue #32 · FreeBSDFoundation/proj-laptop · GitHub
I have not tried any of these patches.