>>41478055Admittedly not a huge rock type fan, but here's my reasoning for each:
rhyperior: associated with rulership, design evokes pharoah headress, so it makes a good king
aurorus: looks vaguely femme i guess
probopass: hat
kabutops: swords
bastiodon: is a castle
nosepass: blindly walks in one direction, also evolves into one of the big pieces
>>41478060assuming you mean the bug column:
doubt i need to explain vespiquen or combee
ribombee contrasts a lot of the other kings nicely and is a fancy boy. A young inheritor to whoever vespiquen's husband was maybe.
Shedinja has a sagely appearance, even including a literal halo.
Escavalier is a literal knight
forretress is a literal fortress