New Knock Off learners not yet mentioned in the OP;
- Infernape
- Morpeko
- Swanna (also gets Flip Turn!)
- Trevenant
- Spidops
- Arbok
- Poliwrath
- Ariados
Some very curious distribution going on with Knock Off this gen, apparently they have decided that it makes sense for snakes to learn this move since both Arbok and Seviper got access to it. The same apparently goes for spiders since both Spidops and Ariados learn it, kinda curious how that's supposed to work with the latter in particular. Swanna I guess sorta makes sense by virtue of Pelipper also getting the move and because swans are known to have powerful wings? Swalot, Gengar, and Falinks also kinda puzzle me.
Scyther also has lost access to Knock Off in addition to Landorus and the Pawniard line, but Scizor does still get Knock Off. None of the Knock Off compatibility retcons are especially logical from a flavor perspective, but at least with Lando and Pawniard they clearly did it for balancing purposes. Why Scyther in particular also had to be the victim of this is unclear to me though, unless they just really don't want Kleavor to learn it fsr?
E: oh yeah Toxapex also lost Knock Off, as did Alomomola. Cryogonal also doesn't have access to it, maybe they recognized that an ice crystal learning it was kind of a stretch but it's a bummer since it barely has a movepool to begin with.