What Pokémon change their primary type Upon evolution?

Question

I recently found out the Ursaluna was a primary Ground type instead of Normal and thought that it would be useful for Soul Links/Monotype play through. Are their other Pokemon besides Ursaluna and Eevee whose primary type change?

Answer 1

Here are the evolutions whose primary type gets changed:

Galarian Slowpoke into Galarian Slowbro and Galarian Slowking (Poison comes before Psychic)
Onix into Steelix (Steel replaces Rock)
Cubone into Alolan Marowak (Fire replaces Ground)
Mime Jr. into Galarian Mr. Mime (Ice comes before Psychic)
Eevee into its Eeveelutions (Water, Electric, Fire, Psychic, Dark, Grass, Ice, and Fairy all replace Normal)
Azurill into Marill (Water replaces Normal)
Hisuian Sneasel into Sneasler (Poison and Fighting switch places)
Ursaring into Ursaluna (Ground comes before Normal)
Swablu into Altaria (Dragon replaces Normal)
Rufflet into Hisuian Braviary (Psychic replaces Normal)
Fletchling into Fletchinder (Fire replaces Normal)
Goomy into Hisuian Sliggoo (Steel comes before Dragon)
Gimmighoul into Gholdengo (Steel comes before Ghost)

Source: Looking through the evolution chart

Comments

I honestly don't know why they decided to make Hisuian Sneasel a Fighting/Poison-type and later change its evolution to be a Poison/Fighting-type. Wouldn't it make a lot more sense to keep the combination the same throughout its whole evolutionary line?

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I am looking at my Sneasle and Sneasler in game and they are both Fighting/Poison in that order. Could this just be an error on the DB?

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I believe this is an error by the DB, and Bulbapedia confirms this. You should report this on the minor site errors thread: https://m.bulbapedia.bulbagarden.net/wiki/Sneasel_(Pokémon)

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Bruh, I already did. Why else would I comment below my answer questioning this? :/

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Oops, my bad, forgot to check.