Despite being unpopular, in 2016-17 UNI5, LIME, LipB and Monstar set the standard how decent Vpop groups can be. Then followed Zero9, P336, D1verse, 020 Girl Band and SGO48. Not so good imo. Now only UNI5 is kinda popular and relevant in Vpop.
Soon enough we'll be hearing from new Vpop artists. Just wait and see. Eventually we'll have a new generation of vpop artists even. :)