WHM has mostly only cures, status removals and better raise.
And highest meva per ele via barspell+bar resist(seperate category i think?) Highest pro/shell assuming merits, boost spells, status immunity via caress, i know you said mostly just laying it all out.
The other mages being able to atleast aoe heal to some decent capacity isnt too much to ask for which is the typical complaint for why whm is miles ahead, plus free cures, but loads of refresh mitigates some of that