User blog comment:Lemamamn/WHY SEASON 6 IS OBVIOUSLY FANS VS FAVS/ WHO I WANT BACK/@comment-11883116-20170518124938

1. The next season actually is obviously going to mix the three generations of TD, like TDAS mixed the first two. Maybe even some RR contestants will be included, but that's unlikely. What they said doesn't exclude the next generations and it makes sense for them to return.

2. "Some" was because not all of the favorites from season 1 are going to return.

3. Both sides have their points. But it'd be nice to give some other characters a time to shine too.

So yeah, definitely not all of the ones you listed are coming back, but some of them for sure.