SE has Multiple types of healing they could use

[ItMe]

I do agree some are relitivley simular, but the post was kinda just telling of healing types that could be assigned to its unique healers.

[...]

with the new styles of healing, healers would have many more playstyles they could be, and it would force more unique ways to support.

(Emphasis mine)
Would they?
Because you seem to be broadly breaking things down into preemptive healing and post damage pure healing. I don't see how simply flavoring why you put the healing skill before or after the damage changes all that much.
Dot 1 1 1 1 heal
Vs
Dot 1 1 1 shield 1