FRSO seems good on most things, but supports "upholding past treaties" with native Americans, which is somewhat of a red flag. PSL seems good but I've heard claims that they're not that good on the settler colonial issue either and lack proper democratic centralist structure. I don't know much about the WWP, but their 15 point programm doesn't mention landback at all. I know next to nothing about the other socialist parties/orgs on the US, so I can't give my opinion on them
I thought it was still at least nominally a Marcyite Trot org, but I'm happy to be corrected if that's not the case
I don't think it ever was. Marcyism in a Trot org was part of the path to a proper ML org for some of the founding members, that's all. Absolutely nobody considers them self a Trot in PSL.
That's good to hear. I heard conflicting takes on this when I was researching while trying to decide on an org