I love rhyhorn family, here is a team with all three

Rhyperior @ Leftovers
Trait: Solid Rock
EVs: 252 SDef / 252 Atk / 4 HP
Adamant Nature
- Earthquake
- Avalanche
- Stone Edge
- Megahorn

Rhydon @ Eviolite
Trait: Rock Head
EVs: 252 SDef / 252 HP / 4 Def
Careful Nature
- Earthquake
- Double-Edge
- Rest
- Sleep Talk

Rhyhorn @ Focus Sash
Trait: Rock Head
EVs: 252 Atk / 128 SDef / 128 Def
Adamant Nature
- Stealth Rock
- Megahorn
- Rock Blast
- Counter

Bouffalant @ Choice Scarf
Trait: Sap Sipper
EVs: 252 Spd / 252 Atk / 4 SDef
Jolly Nature
- Head Charge
- Earthquake
- Iron Head
- Wild Charge

Jynx @ Life Orb
Trait: Dry Skin
EVs: 252 Spd / 252 SAtk / 4 SDef
Timid Nature
- Nasty Plot
- Ice Beam
- Psychic
- Focus Blast

Dusknoir @ Leftovers
Trait: Pressure
EVs: 128 Def / 128 SDef / 252 Atk
Adamant Nature
- Focus Punch
- Pain Split
- Shadow Sneak
- Substitute