Yeah, Russian names are quite easy to be honest, they are extremely phonetic. They might be long or sound foreign, but they're very easy to pronounce. Nurmagomedov is spelled and pronounced exactly as it sounds and reads. They only tricky thing is sometimes the Zh is a guttural huh sound. Georgian is also very easy to spell and read for the most part, super phonetic for English speakers.
Now Kyrgyzstan gets a little more difficult because they are melting multiple languages together and there's more odd clutters of consonants and added vowels that seem odd. I actually find Polish to be perhaps the hardest with some Hungarian and Czech to be difficult too. Besides that Thai names are a pain sometimes but they also seem more phonetic to me than Czech, Polish and Hungarian. Oleksiejczuk is bullshit.