Here's a list...
Devastator - 6 Constructicons
- Hook, Long Haul, Bonecrusher, Scavenger, Mixmaster,
Scrapper
Superion - 5 Aerialbots
- Silverbolt, Slingshot, Air Raid, Skydive, Fireflight
- Stunticon counterpart
Menasor - 5 Stunticons
- Motormaster, Dragstrip, Dead End, Breakdown, Wildrider
- Aerialbot counterpart
Defensor - 5 Protectobots
- Hot Spot, First Aid, Groove, Blades, Streetwise
- Combaticon counterpart
Bruticus - 5 Combaticons
- Onslaught, Blast Off, Swindle, Brawl, Vortex
- Protectobot counterpart
Predaking - 5 Predacons
- Razorclaw, Rampage, Tantrum, Divebomb, Headstrong
- extremely cool
Computron - 5 Technobots
- Scattershot, Strafe, Lightspeed, Nosecone, Afterburner
- Terrorcon counterpart
Abominus - 5 Terrorcons
- Hun-Gurr, Sinnertwin, Blot, Cutthroat, Rippersnapper
- Technobot counterpart
Piranacon - 6 Seacons
- Snaptrap, Seawing, Overbite, Nautilator, Tentakil, Skalor
- after making 4 limbs, Piranacon uses the last TF as his gun
Monstructor - 6 Monster Pretenders
- Birdbrain, Bristleback, Icepick, Scowl, Slog, Wildfly
- about the height of Hot Rod and very chunky
-
Some people theorize that Omega Supreme is the counterpart despite not being a set due to the reasons unclebabar outlined.
I haven't watched the original in a while, wasn't there also something about the Constructicons originally being Autobots that defected to the Decepticons? It'd help explain the shortage of Autobot sets.