Quoted By:
Look no further, OP. I have the ultimate nuType.
Booger-Type
Weaknesses: Flying, Ice, Bug(?)
Resistances: Steel, Ground, Fighting(?), Electric, Fire(?)
SE Against: Fairy, Ground
NVE Against: Flying, Steel, Ice
Grimer line becomes Poison/Booger
Tangela line become Grass/Booger
Slugma becomes Fire/Booger (Magcargo remains Fire/Rock)
Gulpin line becomes Booger/Poison
Burmy becomes Bug/Booger (Mothim and Wormadam remain unchanged)
Solosis line becomes Psychic/Booger
Cubchoo line becomes Ice/Booger
Accelgor becomes Bug/Booger
Swirlix line becomes Booger/Fairy
Goomy line becomes Booger/Dragon
There are plenty other Pokemon that could make good Booger-types, but it would involve retconning their existing dual-types which Gamefreak doesn't seem to like doing. I'd propose the Shellos line as Water/Booger, Woobat line as Booger/Flying, possibly something with the Tympole or Pineco lines, and maybe Politoed as Water/Booger.