I don't understand the differences. I have a dumb AP and want WPA3 support with my WiFi6 hardware (Belkin RT3200). From the help:
This package contains a full featured IEEE 802.1x/WPA/EAP/RADIUS Authenticator and Supplicant
This package contains a full featured IEEE 802.1x/WPA/EAP/RADIUS Authenticator.
Unless you have a solid reason, always go with the
hostapd features into one binary, supporting 'everything', if you do know that you only ever need either
hostapd, installing one of them might be smaller - but installing both, to get an equivalent feature set of
wpad, would end up significantly larger without any specific gain in functionality.