Fruit tree recommendations for Zone 5a

I have an area of my property I would like to turn into a food forest of sorts. I'm looking for recommendations on fruit tree to plant, I'm in Zone 5a. I've found fruit and nut trees on the Arbor Day foundation website, but I believe they are seedlings. It would be nice to plant some trees that are a little bigger to get a head start and not have to wait 7 years to produce fruit.  So if anyone has not only tree recommendations, but also recommendations on where i can purchase trees ( I'm in Delaware County NY but also often downstate NY ). I'm also wondering what the possibility is of potting the trees first and planting them when they are a little bigger, or if that is considered a bad idea for seedlings.

here is a location where you can find all sorts of nursery reviews on Permies

https://permies.com/wiki/seed-reviews

Personally I would suggest looking at St. Laurent Nurseries they are in NY. They are in zone 3 so anything they have will grow for you.

Elle has a great list of different fruit trees and specific varieties in this thread Fruit trees and berries that grow best in your area naturally- Continental climate hardiness zone 5

I personally like smaller trees better, because they usually adapt quicker to their new environment and grow quicker as a result than if a large tree is planted. If you buy good quality trees, they should produce by 3-4 at the latest for most fruit trees and some nut trees, but nuts could be closer to 7 years for some types.

It's best if you can put them straight in the ground, but you could definitely pot them if you have to, but the sooner you can get them in their permanent home the better.

Hope that helps, and happy planting!