Ridley has been a long requested character. I'm not sure about Simon Belmont, but even before SSB4, I thought adding Simon would be cool. I never expected it, though, given Konami's crappy direction. And King K. Rool? That just seems like a given. These other characters don't fit the bill. They've been characters people have been requesting since the announcement of SSBU, or more accurately, these are characters people have become vocal about since the announcement of SSBU. Isaac is the only character I'm aware of who people requested since SSBB. These other characters, not so much.
You assert Sakurai forced Chorus Kids onto people, but lack any evidence. This has got to be the most absurd claim, though, since people . . . Wait. Just seeing this thread, I can see how simple-minded people can be.
The only character worth bothering with would be Mach Rider, and that's only because I had the game for the NES when I was a child. I don't like sword characters. I don't care about Shadow because I don't care about the Sonic series. I don't see the appeal with Geno and am opposed to additional Mario characters. I've never played Banjo-Kazooie, so I don't have any emotional investment in such character. I played Street Fighter, but preferred Ryu over Ken.