I'd be willing to bet you every last dollar on the planet that if you read your deed, you will find zero claims to any particular zoning. Zoning is not a transferable property right. It can be changed for any reason at any time.

Zoning belongs to all the voters in the municipality, not just the homeowners.

It's a beautiful state of affairs when owners of property can collude for their interests with almost no restrictions, but worker unions are almost entirely defanged.

I have a bridge to sell you