This thread was actually a really good idea, I don't think it'd clog up your portal that hard to input stuff that'd work, since people come on here and want to listen to the type of music they can really think they'd enjoy/know about.
Trap is prominant
Mombathon is VERY prominant in every club and lounges, even moreso in europe (Afrojack does mombathon in some of his songs...bangduck)
Bro you don't even have an "Experimental" Electronic section for all those who fancy they'd want one genre, but don't want to be stuck with one thing only
Hardstyle/Hardcore is SO prominant atm o.o
and yet...you have one called "chipstep"...I won't even try to pretend that "if I don't know it, it's not prominent"...it might be...buuuut liiiiike x_x, I'd bet that's a sub-type of Chiptune o_o.
all that being said (I just didn't like how the other user got shut down like that), a proposition for your portal would be to let people pick one of your genres...but also have, in every genre an "other: PLEASE SPECIFY" section...just to make it easier on everyone, and to save time, because your options are very limited o.o.