Outside of Aldo and Condit, I can't think of any high-level UFC fighter who I would say has "above average" Muay Thai. Maybe Cerrone. Anderson Silva has always had a lot of TKD qualities and now he's moving away from Muay Thai and focusing more on pure boxing. Jon Jones is more arms and legs. There just isn't a lot of great 'pure' Muay Thai in the UFC.
That is what I am saying though. People say that Muay Thai is the best striking art because every one in MMA uses it and MMA has open rules so all martial arts are equal but what people don't realize is that very few guys even in the UFC actually use pure Muay Thai or something that is very similar.