I haven't seen any evidence to support the claim that psychedelics other than Ayahuasca catalyze neurogenesis. That being said, there is evidence that LSD increases neuroplasticity. https://www.cell.com/cell-reports/pdf/S2211-1247(18)30755-1....
https://www.nature.com/articles/1395272
https://www.ncbi.nlm.nih.gov/pubmed/762668
https://www.ncbi.nlm.nih.gov/pubmed/14557608
https://www.psymposia.com/magazine/do-psychedelics-trigger-n...
https://maps.org/research/other-research
Also highly recommend stuff by Paul Stamets.