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.
The subdivision rules are changeable only with a supermajority vote. I believe the city (Houston in my case) is prohibited by the state from unilaterally changing them.
(I wouldn’t mind more free property rights!!! I find TX “liberty” is often biased towards $$$)
I've actually encouraged NIMBYs to use those HOA-style restrictive covenants if they're so adamant on their "zoning" never changing, because a restrictive covenant is actually a volunatory restriction. A city cannot come in and remove them willy nilly (they do in special cases like red-lining, but it is a politically arduous process). Someone with a restrictive covenant by definition has more protection from their neighborhood changing than they would if they just relied on zoning.
The problem is, nobody likes restrictive covenants, and they don't like the HOA-like structures that govern them, and they really don't like the punchable-faced people that seek power in those kinds of organizations.
The government can also just take your deed and property, again subject to the takings clause, so long as they pay you back. Or claim someone was slinging crack there or something and not pay you back.
If you're including things subject to the democratic process all the above is on the table.
Also plenty of things written into the deed don't mean shit. It's quite common to read a deed that says something like, in more fluffed terms "no black people allowed." This got baked into lots of deeds back in the day and never got changed because removing covenants to a deed is usually next to impossible. It doesn't mean dick because again the government can simply add or subtract by fiat what your deed actually means.
What your deed is and isn't is a lot closer to how zoning works than you think. Ranchers found this out when their transferrable private property grazing rights tracing back to the very founding era of the USA got usurped by the government and ultimately the BLM who turned around and actually said they're public federal property (which resulted in things like, the Bundy standoff).
Zoning is a restriction on your rights...when they are lifted, you are gaining more tangible rights, not losing them. If anything, the takings clause should have applied to properties where zoning was introduced...not where it was removed.