This guy pretty much has it. OZone is also a UK league, not very popular though.
OZone's Swedish man. They do bring over a lot of UK dudes though. There's some good leagues in Europe, like Basementality. I didn't mention the biggest league on views, Fliptop, as I'm assuming no-one speaks Filipino.
Oshea may be the funniest guy around, he's just punch after punch.
EDIT: What the fuuuuuuck @ Saurus vs Matter
Thesaurus' freestyles in the 2nd were about as good as you'd expect in that situation, and even though his third was fire, you just can't count that. He smashed the first, but come on.
2-1, to Matter. He took round 2 easily, probably even without the choke he had it, and his third was basically unopposed. His first was bad. As it went on, though, he got more comfortable and he definitely deserved the decision.
Saurus - nicest guy in rap? So weird to see him choke. The only other one I can remember in written leagues is when Philly killed him but that was a completely different situation. Taking into account his actual writing and his Ness Lee performance, though, it seems like he's got some determination about him again.