Churban has not really used since the 1990s. It's CHR/Rhythmic or Rhythmic CHR. CHR-Pop is usually really defined as Mainstream CHR although that isn't really needed anymore as the music has evolved. If anything, as we approach a broader convergence of CHR and Hot AC due to the former moving in a more gold heavy and 25-54 focus away from 18-34, new terms may be needed there."CHR Pop" is not a Nielsen or MediaBase accepted format. CHR, Churban, Hot AC are real options.
In 2020, I began changing definitions of Urban and Urban AC (and a few station groups have followed suit) as Hip Hop, Hip Hop/R&B, and Adult R&B due to the racist connotations behind "Urban" as a code word for Black.
But since this is so far off the original topic, perhaps this should be spun into its own thread.