I’ve been able to monitor fan speed using a command line sensor.
https://community.home-assistant.io/t/monitoring-rpi-5-fan-speed-in-systemmonitor-integration/650108/2
I haven’t figured out the RTC. Entering “dmesg | grep rtc” in terminal, I can see I’ve got the trickle charging enabled at 3000000uV and the RTC is registering as rtc0.