Till's kicks are not traditional Muay Thai kicks. Watch his footwork. He steps and plants his base foot sideways & flat on the ground to open up his hips for the kick. The kick goes wide & around to the target, and when you miss it you end up doing a 360. This is what I call the Brazilian kickboxing method as it's what's used by Shogun, Wandy, Aldo, and most of the other MMA kickboxers from Brazil. It's also the method taught by Bas Rutten.
The Thai style kick is a bit more complicated. The fighter pops his kicking leg off the ground with his calf & ankles (ever wonder why Nak Muay have giant calves? Yeah, that's why) while coming up on the ball of his foot on the base leg. At the same time he starts pulling the kicking leg up with his hips, and then he'll pivot the base leg to open up the hips and accelerate the kick along with changing its trajectory from mostly upwards to mostly sideways. So you have a kick that comes mostly upwards really fast, then turns sideways and rips through the target. And it can be thrown straight from the stance without first taking a setup step to plant the base leg and open up the hips.
Nong-O and Singdam demonstrate real Thai style kicks. Darren Till's kicks look nothing like this.
The closest in the UFC are David Teymur, Anthony Pettis on a good day, and the Shevchenko sisters.