Bug pokemon: convergent evolution, or common ances

Yo dudes!
I don't usually get into lore discussions like this, but I thought maybe someone here would know more than me or we could come up with theories together!

So, right, the pokedex entries for SWSH say that, specifically Sizzlipedes and Skorupis share a genetic ancestor. Specifically, it says


This raised a lot of questions in my currently insomnia addled mind. A lotta bugs are segmented, like sizzlis and skoops, this would most closely match the isopod-y Armaldo. Tons of bug types have mustaches too, some super similar to one another (Golisopod, Orbeetle and Drapion sharing one style, Centiskortch and Kricketune, etc). Do y'all think that means there's basically two primary bug ancestry groups? Isopods and not isopods?

If anyone knows more or has more ideas I'd love to know.

I was gonna say "Isopods are under Kabuto and non-isopods are under Omanyte," but then my ever-expanding brain remembered that... Omanyte isn't a bug...

The only non-segmented bug Pokemon I can think of off the top of my head is Kricketune, but I'm sure there's an older one both lore-wise or generation-wise.

Right? I was thinking maybe it'd be kabuto and armaldo but they're trilobytes and isopods so they're too similar to be two groups...

I wonder if this is locked behind the mystery of what genesect comes from!

Ooh, it could; I never really thought about Genesect being an Actual Bug with some techy stuff slapped onto it, rather than a full cybernetic construct. Imagine if there's a future event where you find an unmodified Genesect :0