The only meaningful informed decision, but sadly much less known (and I think we should talk and insist more on it), is to be wary if you see a CLA. Not all do, but most perform Copyright Assignment, and that's detrimental to the long-term robustness of Open Source.

Having a FOSS license is NOT enough. Idealy the copyright should be distributed across all contributors. That's the only way to make overall consensus a required step before relicensing (except for reimplementation).

Pick FOSS projects without CLAs that perform Copyright Assignment to an untrusted entity (few exceptions apply, e.g. the FSF in the past)