[quote=@Sumable]
Lugia and I were planning to have me be a scraggy (covering rock, ice, ghost, normal, dark, psychic, bug) and having Lugia be a Nidoran F which would have the entire team cover everything but water and flying.
[/quote]


Unfortunately, Scraggy will be wrecked easily with a Fairy or Fighting move. 

Honestly, type coverage is impossible to cover, not because of the type, but because of the moveset and stats. Most Pokemon end up with very diversified movesets or use their natural stats to get their way. Some are sweepers, some are sheer defense, and some are fast enough to get the first hit.