Come on. ACA, ONE FC and KSW have exclusive contracts (and I think KSW pays good that's why there is like only couple of KSW champions who signed with UFC).Almost everyone says that LHW is one of worst divisions and that there are no good LHW fighters outside of top promotions.... but i dont think so -
Tomasz Narkun (17-3) KSW
Dovletdzhan Yagshimuradov (18-5) ACA
Nasrudin Nasrudinov (9-0) ACA
Ivan Shtyrkov (17-1) RCC
Muslim Magomedov (7-0) ACA
Reiner De Ridder (12-0) ONE FC
Asylzhan Bakhytzhanuly (11-1) ACA
Bogdan Guskov (10-1) BRAVE FC
Csaba Hocz (7-1) GCF
Ivan Erslan (8-0) KSW
etc...
All of these guys could compete in UFC ... it seems to me like UFC have lack of interest in LHW