I'm guessing there's a fabber, scamper, and spinner. Nonetheless, what horrible thing has befallen those icons' outlines?
It might be that the shapes are distinct enough to make out in a blob, (e.g., with the current icons I mostly read just bot,vehicle, air, factory, etc) but other than the com, they don't immediately suggest anything to me.
as with all the icons i create this is always a problem i do not know how to fix...... if the black lines where visable you could see them more...
Outline needs to be red on texture, and team color yellow. If you want to change outline from white to black you need to change shader. Green channel is where main team color is used. Red or Blue is about outlines, but propably Red. Red should be all white, to avoid artefacts. Here you have sharp commander icon as example.