The guy in the Star Wars explain video posted earlier thought that he might actually be inspired by Hooter from Captain EO, rather than Max Rebo.From https://www.starwars.com/news/skeleton-crew-jon-watts-christopher-ford-interview:
"And, no, Neel isn’t the same species as Max Rebo. We asked."
https://starwars.fandom.com/wiki/Neel's_species
Any reason why they didn't want Neel to be an Ortolan? I mean, he does look slightly different than Max Rebo, but that can be explained many ways. I know it's kind of ambiguous as to how many appendages Ortolans have.
https://www.imdb.com/title/tt0090793/mediaviewer/rm444671233/?ref_=tt_ph_2