There are many that come to mind. But the 2 that immediately pop out for me are Usher and Janet. They have recent songs that are okay, but in r/t the potential I think they possess, just not feeling them. Honestly, it might be my age and the direction of music in recent years. Perhaps I will never feel the same way about anything after having lived through the music of the late 60's, and then the 70's, and to some degree, the 80's and 90's.
While I admit to not listening to music as I used to, what I have heard just isn't getting it and perhaps never will. Locked into the older stuff may be my problem, and not that of younger people of this generation.