Skills that ignore glancing blows?

[Gladius-nethergarde-keep]

In a recent warrior-related discussion it was pointed out that heroic strike does not become a glancing blow.
Is that something that is true for other melee class skills or just for heroic strike?

[Fringe-zandalar-tribe]

Glancing blows only happen on white damage, so just auto attacks.
Skills will never be a glacing blow

Edit: I googled it to be sure.
It does happen on white damage but thats not just auto attack, from a wikia:

White damage is damage dealt from your common abilities that consume no mana, energy, or rage. This includes auto-attack, shoot, throw, auto-shot, and the like. It is so called because the value of the damage is displayed on screen in white as opposed to yellow.
A white crit would be any crit of a white-damage attack.

[Thea-pyrewood-village]

Only auto attacks can glance.
And always will. Damage reduction of a glancing blow of level 60 character against level 63 raid boss is 30%, i.e. your auto attack glancing blows deal 70% of normal hit damage. To reduce this number, i.e. increase the damage of a glancing blow you should increase your weapon skill. With each 5 points of a wepon skill the glancing blow damage increases by 10%, being 80% at 305, 90% at 310 and 100% at 315. Being a human with a sword/mace or an orc with an axe gives you +5 weapon skill due to racial trait. Obtaining Edgemaster’s Handguards (ultrarare 40ish level world drop mail gloves) gives you +7 skill with axes, swords and daggers. Maladath sword from Broodlord in BWL and Anubisath mace from AQ40 trash give you +4 weapon skill with swords and maces respectively.