Yesterday I tested NomadBSD 14.1R-20240711 from USB live drive — WiFi was up and running straight away, without any intervention from me, hooray!
Unfortunately, after reinstalling from USB to an internal SSD, the wireless connection was not accepted for some reason. Ethernet was invisible already before, from USB. So I had to do a bit of digging before I could get online. 
The problem is negligible, so I just need to find a way to keep the networking after a reboot. Relogin does not break the connection.