hRM I am assuming thats Defense of the ancients, Heroes of Newerth, Leauge of Legends, ect.
Technically... they are RTS games.
Beyond that they are considered to be a sub genre of RTS due to their RPG esque nature and in cases that is dubbed RTS/RPG.
Also with direct popularity and connection its also referred to as the DOTA sub genre.
There is also mention of "Multiplayer Online Battle Arena" or MOBA. (edit: Personally I would switch the A and Baround because at least in my head the sound of MOAB ((Moe- Abs minus the s)) rolls infinitely better than MOBA (( Moe - Bah)) Just a personal opinion.)
However I am not really seeing much point in specifying more than RTS as the subgenre has yet to develop and flesh out enough to constitute a name yet. as it does, the name or initalisim will come more naturally.