>>5649530>What factors made Kenny Omega such a popular gaijin in New Japan?Speaking Japanese more or less fluently on a conversational level anyway has a lot to do with it. Also, Ibushi was very popular from the start and their rivalry/tagging boosted Omega's popularity decently. But most people didn't really know him until he moved up to heavyweight in NJPW in 2016.
>Are there any other examples of disgustingly over gaijin?Quite a few, yeah. Stan Hansen worked the majority of his career in Japan and is massively beloved. Terry Funk and Dory Funk in the 80s in AJPW were red-hot as well, Terry specifically. Other guys were pushed as main eventers in Japan, typically as monster heels -- like webm related, Dr. Death Steve Williams, won the AJPW triple crown, and Vader annihilated Inoki and caused a riot.