In general:
CAT I - Baro
CAT II - III Radio
It can depend on if the 310 is Fail Operational or Fail Passive in the case of which CAT III you can fly. The 320 is Fail Operational, but it’s newer. The 737 is Fail Passive.
In general:
CAT I - Baro
CAT II - III Radio
It can depend on if the 310 is Fail Operational or Fail Passive in the case of which CAT III you can fly. The 320 is Fail Operational, but it’s newer. The 737 is Fail Passive.