BJJ is great, but a lot of teachers are closed minded regarding what they teach and the way they teach.
Not all places are like that mind.
Another option is submission wrestling, it's no-gi and they use everything that BJJ guys use, plus anything else that works. It's more a frame of mind than a style, they steal and borrow moves from any grappling art. Leg locks, neck cranks,muscle crushes, spine locks all sorts.
Or Sambo which is basically russian Judo, but they are leglock masters.
Even if you want to do MMA I wouldn't completely give up Judo, it has it's place in MMA just like all the other arts.