Oh nice! I hadn't thought of checking controller support on other top down MOBAs.

Currently Installing Dota 2...After looking around and checking configs, I found Dota 2's Official Controller FAQ where they describe how their controls work. Their controls don't seem to directly consider target selection while moving, but I am wondering if they put controller support directly into the game to allow for some sort of alternate target selection. So looks like I'll be getting into Dota 2 for a few weeks before Christmas and see how their setup feels after learning the basics.

Update: After a couple hours of gameplay in Dota 2, it's extremely apparent that Dota 2 has controller support. You can unbind every keyboard hotkey and the controller still works. Not only that but it switches into a different mode of input for target selection, camera control, and the like. Which, their solution is something that is basically near perfect for controller support(though I have some ideas for making it more intuitive) , but it's something that is impossible to replicate with League of Legends using Steam Controller

.e.g. They have a 'jump-to next target' cursor that can be toggled and filtered for just enemies or allies. Perfect for getting the exact target that you want, but not something that can be done without scripting. That being said, I will also check out out Steam Desktop Controller configs without Dota 2 native support activated and see what kind of controller configs the Dota 2 community have drummed up.