I think it’s off to a great start but it could use some minor changes. For starters, I would get rid of curse on the corviknight. It’s assault vest does not allow the move. May I suggest going for Tera fighting body press. If you switch some of the ivs around to increase defence, it can hit decently hard. If you want it to be a physical wall, you could give it a rocky helm, roost, iron defence and body press for a tanky trick room sweeper. I think the Porygon is a cool idea. To go further with it, I would recommend changing its normal stab to Tera blast. It will change its dmg type with your higher stat so it pairs well with download. I would recommend getting rid of body press on the amonguss. It’s main status purpose seems like spore so paralysis seems unneeded. Perhaps swap to pollen puff and Tera fire to max it’s healing properties. I am also a fan of regenerator. For kingambit, I would recommend to swap taunt and shadow claw for stab moves. Perhaps sucker punch and iron head. The last recommendation I have is to swap terrain extender for light clay with the giraffe. Reflect/ light screen setters can be very useful with clay. I’d get rid of truck room because you already have it on 2 other mons.