I got full prot to 21 (still alive, just playing priest and rogue more), definitely slow and steady, but u take 0 dmg. Shield block is 2 charges and mobs hit for like 5 dmg at 21.
I’d say from my experience so far…
Bubble+wand Priest easiest.
Hunter 2nd easiest
Full prot warr 3rd easiest
Rogue 4th easiest
Didn’t play other classes yet on hc.
That’s how analogies work. You take something people may be more familiar with, and use it as an example to explain something else.
I’m levelling a hunter for the first time in 15 years and I can’t believe how easy it is.
Macro with /cast Hunter’s Mark, /Cast Auto Shot, /petattack, and you’re good to go.
Pally or priest.
How’d you die on pally?
hunter…after level 10 ofc
The easiest class to level from 1 to 60 is priest by a mile. Nothing really can kill you.
Pally 
Seriously for me pally hunter and lock are the easiest