Will glady share what i researched long ago.
While 99% of legal name changes are public records and done at local/state level. So anyone can find your new name.
Their is state supreme court legal name changes that are sealed. It's basially do it your self witness protection. From what i can tell pretty much ever state only gives such powers to their state supreme court judges of their state [for obvious reasons to prevent legal abuse, etc.]
It's done by an handful of state lawyers that deal with your state's supreme court and is done to protect people from whatever threats they face,etc.
Likewise do it self witness protection should be done on any land you buy. The mega rich own LLCs that own really high million dollar homes. etc. Everything can be done via an corporation/LLC, whatever in today's world.
The reason you see tv shows full of lottery winners getting endless amounts of mail/phone calls, etc of people begging for money is same reason lots of winners go broke. No planning what so ever. They don't act and do same stuff the mega rich do. They just go out and spend the money. Buy their homes in their NAMES, which people aka scammers find them via public record searches. ETC.
All this stuff is WAY above my pay grade if you want to really hide. You have to search these people out that does this for rich and hire them type of lawyers to hide you.
Same goes for people you already know. If you do sealed name change. DON'T tell anyone your new legal name from your old life. If their name john to them. STAY AS JOHN to them. Okay? Disappear off the face of the earth. Not even your phone you use to talk to them should have your new legal name tied to it. Not even car you drive to go see them. That also owned by a corporation or whatever.
Just freaking legal wise disappear. Don't do media when you win the jackpot. Shut down all social media. Who cares if the news media or scam types that hunt lottery winners know who the "old you" is. Be in new place, new state even IF NEED BE. Not have anything linked to your old legal names in any way. Just freaking disappear.
If a person wants to be left alone and they have tens of millions of dollars. It can be done. Just matter of getting the right help and being smarter then the masses.