Most of today's Pop really is just R&B with white faces. As a matter of fact, when they're looking for songs for the current crop of Pop artists, they'll specifically request R&B songs that could work for "insert Pop star name."
A lot of what I've heard over the last two years has not just been R&B disguised as pop, but 80's style Funk/R&B passing for modern Pop.
Increasingly, what makes a song labeled Pop or R&B is the color of the artists' skin. Justin Timberlake's stuff is mostly R&B. Especially, "Future Sex/Love Sounds" and the double album "The 20/20 Experience." Both of those were essentially black music. The chord structures, the rhythms, the melodies, the harmonies, vocal runs - R&B productions through and through. The only thing missing was Usher.
Also, peep his band, "The Tennessee Kids." Bad af and funky as hell. Watch that concert he did on Netflix. That's R&B. But, he's white so it's considered Pop.
I used to like him, but after that bullshit with him not supporting Kap, I'm good on JT.