Porygon2 are just as hard to come by as their pre evolutions, but on the plus side they now have a better sense of touch and sensation, so they like to indulge in their partners a LOT more than before!
Kingdra are exceedingly rare musu, so tales of them bonding with humans aren't common, their hearts ache for companionship though so if you can find one and not fear the power they hold over the sea, they might be a good fit for you!
Skarmory tend to be very stoic, they only bond with those that manage to impress them in battle, which is hard to do since they're very adept at combat, still seeing them with human partners is not entirely unusual!
Remoraid are sticklers for rules, so they appreciate anyone that believes in discipline and has a strong sense of justice!
Octillery are near polar opposites to Remoraid, they believe in justice by any means necessary, so if you want to bond with one it's best to embody a rebellious spirit and get ready for some vigilante action!