An analysis of personnel is an incomplete and non-definitive answer but ought to be a useful starting point.
Paradigm Academy does not list its team on its website. However, a quick search on Linkedin yields 16 results (13 with public profiles) for people at Paradigm Academy. Of these 13 profiles, 7 include experience at Leverage Research or allied organizations, and a further 4 are well-known to have worked for Leverage Research. Edit: at the request of Julia Wise, I've encoded the names in rot13, so that this comment doesn't broadcast their association to LR to everyone who Googles their names.
Leverage Research, Paradigm Academy and Reserve:
Zvpunry Phemv
Leverage Research and Paradigm Academy
Rzvyl Pebggrnh, Wrna Sna [YE abg pvgrq], Nabalzbhf Crefba [YE abg pvgrq; cersref abg gb or nffbpvngrq jvgu YE]
Paradigm Academy and Reserve:
Xriva J, Urael Svfure, Qnavry Pbyfba
Paradigm Academy only:
Nynaan Xebjvnx, Wnaryyr Jvyyvnzf, Wbanguna Jnyyvf [Frrzrq irel vaibyirq va YE], Zvaql ZpGrvthr [Frrzrq irel vaibyirq va YE]
Paradigm Academy and Bismarck Analysis:
Mnpx Yrenatvf, Oevna Oheaf
Edit, June 2022: I should hope it goes without saying, but please don't harass these folks for having worked at LR.
[Epistemic status: Talked to Geoff a month ago about the state of Leverage, trying to remember the details of what was said, but not super confident I am getting everything right]
My sense is that I would not classify Leverage Research as having been disbanded, though it did scale down quite significantly and does appear to have changed shape in major ways. Leverage Research continues to exist as an organization with about 5 staff, and continues to share a very close relationship with Paradigm Academy, though I do believe that those organizations have become more distinct recently (no longer having any shared staff, and no longer having any shared meetings, but still living in the same building and both being led by Geoff).