Some Pokemon can perform more than one role at once, like Blissey being a special wall AND a cleric, or Skarmory being both a physical wall AND a phazer. You're also missing one key thing in the sets you posted: the Pokemon's EVs. But we can fill those in for you.
-Salamence: 252 Attack, 252 Speed, 4 Sp.Attack.
There's no point in using Nasty Plot on Togekiss if its only attack is Air Slash. You'll wanna use the paraflinch set anyway. It's fun:
-Togekiss w/Leftovers
Nature: Bold/Calm
Ability: Serene Grace
EVs: 252 HP, 248 Defense, 8 Sp.Defense OR 252 HP, 248 Sp.Defense, 8 Defense
Moves: Air Slash, Thunder Wave, Roost, Dazzling Gleam
-Chansey: 252 HP, 252 Defense, 4 Sp.Defense. Also, Chansey gets Aromotherapy, not Heal Bell (they do the same thing, basically).
-Skarmory: 252 HP, 252 Defense, 4 Attack. It doesn't need to use Shed Shell since Magnezone is no longer a common sight, so Rokcy Helmet is a good second option.
Oh, as for a special attacker, a couple of options I can think of:
-Greninja w/Life Orb
Nature: Timid/Hasty
Ability: Protean
EVs: 252 Sp.Attack, 252 Speed, 4 HP
Moves: Hydro Pump/Surf, Ice Beam, Dark Pulse/Extrasensory, Grass Knot/Spikes/U-Turn
-Volcarona w/Life Orb
Nature: Timid/Modest
Ability: Flame Body
EVs: 252 Sp.Attack, 252 Speed, 4 Defense
Moves: Fiery Dance/Fire Blast, Bug Buzz, Quiver Dance, Giga Drain/Psychic/Roost
There's others, but I'll leave it at that for now.
For the record, Chansey also gets Heal Bell:
-Heal Bell/Aromatherapy
-Seismic Toss
-Toxic/Thunder Wave/Stealth Rock
-Soft-Boiled
Nature: Bold
EVs: 252 HP/252 Def/4 SDef
Item: Eviolite
Ability: Natural Cure
Defensive Togekiss sometimes uses Nasty Plot to break through stall:
-Thunder Wave/Nasty Plot
-Air Slash
-Dazzling Gleam/Aura Sphere/Defog
-Roost
Nature: Calm
EVs: 248 HP/8 Def/252 SDef
Item: Leftovers
Ability: Serene Grace
or
-Nasty Plot
-Dazzling Gleam
-Air Slash
-Flamethrower/Aura Sphere/Roost
Nature: Timid
EVs: 4 HP/252 SAtk/252 Spe
Item: Life Orb/Leftovers
Ability: Seren Grace
Greninja needs Extrasensory really badly now because of Mega Venusaur. Hitting Keldeo is a neat bonus as well:
-Hydro Pump
-Ice Beam
-Extrasensory
-Dark Pulse/Hidden Power (Fire/Grass)/Spikes
Nature: Timid
EVs: 252 SAtk/4 SDef/252 Spe
Item: Life Orb/Focus Sash
Ability: Protean
Offensive Volcarona may still be viable, but it tends to wear itself down fast without Roost (there are times when Giga Drain may not be enough):
-Quiver Dance
-Fiery Dance
-Bug Buzz
-Roost
Nature: Timid
EVs: 240 HP/252 Def/16 Spe
Item: Leftovers
Ability: Flame Body
Just putting this out there, but outside of Earthquake and Fire Blast, Salamence can't deal with Fairies too well. Test out Mega Charizard X or Dragonite. The former is immune to burn while the latter's Multiscale eases setup and it also has access to a decently powered priority move:
Charizard X:
-Dragon Dance
-Flare Blitz/Fire Punch
-Dragon Claw/Outrage
-Earthquake/Roost
Nature: Adamant/Jolly
EVs: 252 Atk/4 Def/252 Spe
Item: Charizardite X
Ability: Blaze
or
-Dragon Dance
-Dragon Claw
-Fire Punch/Earthquake
-Roost
Nature: Adamant
EVs: 144 HP/244 Atk/120 Spe
Item: Charizardite X
Ability: Blaze
or
-Fire Punch/Earthquake
-Dragon Claw
-Will-o-Wisp
-Roost
Nature: Careful
EVs: 248 HP/148 SDef/112 Spe
Item: Charizardite X
Ability: Blaze
Dragonite:
-Dragon Dance
-Dragon Claw/Outrage
-Extreme Speed
-Earthquake
Nature: Adamant
EVs: 24 Def/252 Atk/232 Spe
Item: Lum Berry/Weakness Policy
Ability: Multiscale