Republic Navy
Large : Venator-class Star Destroyer
Medium : Acclamator-class assualt ship, Victory-class Star Destroyer
Small : Arquitens-class light cruiser, Consular-class cruiser (Charger c70 retrofit), IPV-2C Stealth Corvette
Squadrons : V-19 Torrent, ARC-170, Clone Z95 Headhunter, Delta-7B Aethersprite-class light interceptor, Eta-2 Actis-class light interceptor, BTL-B Y-wing, Alpha-3 Nimbus-class V-wing, LAAT/i Space Gunship variant
Separatist Navy
Huge : Subjugator-class heavy cruiser, Lucrehulk-class Battleship
Large : Recusant-class destroyer, Providence-class cruiser-carrier
Medium : Munificent-class star frigate, DH-Omni Support Vessel
Squadrons : Rogue-class starfighter, Hyena-class bomber, Vulture-class droid starfighter, Nantex-class territorial defense starfighter, Ginivex-class fanblade starfighter, droid tri-fighter, Belbullab-22 starfighter, HMP droid gunship (space variant), Trident-class assault ship, Droch-class boarding ship
If I missed anything let me know, I think that I covered most of the Canon ships and squadrons of the Clone Wars. Agree or disagree with the size classifications?