Which specific Archie characters are typically featured in these 'Bonanza' collections?

While the exact lineup changes, the core Archie characters – Archie Andrews, Betty Cooper, Veronica Lodge, Jughead Jones, and Reggie Mantle – are almost always present. You'll also frequently see supporting characters like Moose Mason, Midge Klump, Dilton Doiley, and Ethel Mugwump, along with occasional appearances from characters like Sabrina the Teenage Witch and Josie and the Pussycats.