I planted Anna, Honeycrisp, and Fuji apple trees on my property a few years ago. Just waiting for them to get mature enough to flower and spread the love. Used to have a Granny Smith in my front yard at the old house. Every 2nd year, that thing would drop apples by the bushel. The neighbor kids would come by and shake apples loose to take home to Mama. My wife could whip up pies, cobbler, and apple pie in a jar like nobody’s business. I grew up in Appalachian apple country. Nothing like it.
A former neighbor had over 100 varieties planted nextdoor, and had a farm out of state (in the Appalachians, if memory serves) with almost 200 (with some overlap vs the nextdoor orchard). He had a buddy between here and there who had a farm and was growing over 350 varieties. The estimated number of varieties (some of which may very well be extinct) is over 3000 I think.
My family always planted gravensteins and winesaps, two apples that I imagine are now nearly extinct.