I would wager there are poorly documented or culturally roped off (in the sense that western society just isn’t privy to the knowledge of yet) psychedelics used all throughout those regions. The size of traditional medical and shamanistic systems in Africa and Asia are immense and no less complex than were the ones in Europe, the MENA region, and the Americas. It’s just not open to the western mind fully yet. I believe ibogaine is from the medicinal arsenal of Central African Pygmy (would love to know if there’s a better collective word for these peoples as this is clearly an outdated term still being used) peoples like the Mbuti and Mbenga who have quite a distinct lifestyle and background compared to surrounding Africans who likely have their own equivalents too.