Thanks for the info.
I think they are kinda different, regarding immigration. For example regarding mma fighters -- from what I've seen Poland, Finland, Ireland, Switzerland, Austria -- Chechens only, UK -- I think only Dagestani guys (there is 1 or 2 other guys I've seen mentioned on social media). Also, again mma fighters -- Chechens are mostly in Europe + I know like 2 in US, while Dagestani -- Australia (Askerov lived there but he is mostly a kickboxer), China (few guys, I think Salikhov lived there for a few years), Canada (well, according to Tapology), I think there is a few fighters that represent Bahrain and some other countries like Qatar and Kuwait.
There is also second event of Shlemenko's promotion at Saturday.
I believe this too instead of his version.
But I tried to think of it, isn't there is like only Dariush and Mousasi in American promotions? Like, amongst people with connection to Iran, maybe also Mr. Finland but seems like only Iranian guys are refugees/born in Iran but with another citizenship guys.
Also I think Israel was kind of ignored by UFC until recently -- they signed Levy and had 2 guys on DWTNCS this season.
About Tajikistan and other guys -- maybe you think there is something like a Central Asian quota and they prefer to sign Kazakhstani/Uzbekistani fighters instead of, for example Tajikistani? Since pre-pandemic there were talks about UFC event in Kazakhstan and mma being illegal/banned in Tajikistan, I can get why they prefer Kazakhstani fighters.