I have a Weezing and an Electivire, here are their movesets:
Weezing @ Black Sludge
Bold
Levitate
- Sludge Bomb
- Haze
- Will-O-Wisp
- Pain Split
Electivire @ Muscle Band
Adamant
Motor Drive
- ThunderPunch
- Ice Punch
- Earthquake
- Brick Break
I've not used the others a great deal, but I'll give it a shot for you.
Sceptile @ Petaya Berry
Modest
Overgrow
- Energy Ball
- Dragon Pulse
- Focus Blast
- Substitute
Basically uses both the Petaya boost and Overgrow abilities to sweep. Keep Subbing until your Petaya Berry activates, by which time Overgrow should also be active. Then, sweep away with Energy Ball. Dragon Pulse for anyone who resists Energy Ball, and Focus Blast for Steel-types, who will resist both Energy Ball and Dragon Pulse.
Feraligatr @ Salac Berry
Adamant
Torrent
- Waterfall
- Ice Fang
- Earthquake
- Swords Dance
Similar to Sceptile, but with a small twist. Basically, keep using Swords Dance until you can't take any more damage. Hopefully Salac Berry will then activate, increasing your speed, along with the Torrent ability, then you can start sweeping with your (now) immensely powerful Waterfall.
Ice Fang for Dragons, and Earthquake for Electric-types and other Water-types.
Heracross @ Choice Band/Life Orb
Adamant
Guts
- Megahorn
- Close Combat
- Night Slash
- Earthquake
Simple, yet effective. Megahorn and Close Combat for powerful STAB attacks, Earthquake because it hits very hard, and Night Slash to take out any Ghost-types, who will otherwise resist both Megahorn and Close Combat, and in Gengar's case, Earthquake as well.
I have never used Tangrowth, so I'm afraid I can't really help you on that one. Hope the rest helped though.