Whata re the current support skills (and Icons)

[PArcher]

Oh thanks! I knew I was forgetting something. I'll add it to the list.



Read. The. Post.
I mentioned it on the first few sentences that I listed down the actions that affect your party members directly, as per the OP's request. Convalescence increases the healing output received. Since this means that healers and any other source of healing from other party members is affected by this buff, it can be considered to affect the healing potential and therefore can be considered a support ability.

Convalescence is as much a support skill as Inner Beast is. Its a tank's defensive CD, not a party support action.

(For the record, Rouse and Spur also are not support actions as they are Pet Buffs. Rouse can only be somewhat considered support when used by a SCH to increase the fairy's healing output, but it is NOT a support action at all when used by a SMN to increase their own pet's damage output [akin to saying Raging Strikes is a support action])