>>42497004>TyphlosionFocus Blast is a must. Once you're at Goldenrod,buy it at the Mall and teach it to it once it evolves. Earthquake is also a good investment because Rhydon and quagsire will learn it by level up. The best fire moves it will learn are lava plume, flamethrower and eruption.
>Furret/PersianI used Furret with Return,Shadow Claw and dig in a playthrough. Persian can learn all of those too
>AmpharosIt's level up moveset will do. Discharge,Signal Beam,Thunder wave,but maybe you could try to find an heart scale for Fire punch.
>CrobatTeach it fly as soon as you get it. It's got a bit of a shallow movepool but you could decide to give it U-Turn instead of using it on your normal type. Teach it cross poison from the move reminder and the last slot... Confuse Ray?
>RhydonStone edge,earthquake,hammer arm, and strength,or return I guess. It doesn't have much of a movepool
>QuagsireWaterfall(and Surf if you don't have a dedicated HM slave)Earthquake,rock tomb,maybe sludge bomb but you should use crobat and typhlosion against Grass types anyways