I have always played a lock from Vanilla till MoP. I want to level my lock. My understanding is that with Chromie time I can start with any of the Xpacs. Is there one in particular that is vital to have under your belt? Especially if I want to raid later? The same with my evoker and etc.
Dragonflight is the only expansion you need to play through if you want to raid. Just go with the fastest experience to get to 60 (or just enjoy the story) and then do that.
I’ve heard Warlords of Draenor is the fastest campaign from 10-60. You can fly around and do all the bonus objectives and treasures for big XP.