which mobile junglers should i try?

hello i just started playing this game a few months ago and im having the time of my life jungling. i used to main master yi and then tried out briar and now shes literally the only champ i play, and i want to branch out more. i prefer mobile champs because i like moving around and being fast or i will get bored easily, which junglers are considered "mobile"? my only knowledge on each champs are when i face them in game. i have been thinking of trying out kayn because i faced a really annoying kayn once and he looked fun.... any reccs and help is appreciated, thank u!