• There's a guild for just about every sort of profession that exists, and in some cases, their variations.
• Regulates quality of work, prices, apprenticeships/training and accreditation, employment.
• Practically run the cities where they dominate.

Minor guilds appear in cities, and serve only the host city

• Alchemists' Guild
• Horse Breeders' Guild
• Masons' Guild
• Smiths' Guild
• Cutlers' Guild
• Thieves' Guild

Major guilds are large enough, or "travel" enough, that the Guild branches to multiple cities. Some of these guilds grow quite powerful, almost a nation to themselves.

• Bankers' League
• Mercenaries' Guild
• Merchants' League

• Enchanters' Guild