To me it kind of depends what you prefer, but I love the subjectivity of this list. I prefer to have a little bit of everything rather than a ton of anything. Also I tried to plant things to have successive harvests rather than everything all at once.
1 stone fruit which you can multigraft to get nectarine/peach/pluot etc of the variety of your choosing to get early/mid/late harvest on.
2. A guava which you could do the same, however I have a Barbie pink which really produces a ton of fruit

3. Citrus- you could multigraft or just simply choose what you really want, but they are easy and don’t take pest pressure like the aforementioned do. Get a good late fall/ winter harvest
One of my kumquats, as I love growing what I can’t reliably find in stores for citrus

4. loquat, you can’t go wrong with them, for me fruit begins to be ripe in may and into late June



Stone fruit pic out of order sorry
5. This is going to vary so much person to person but any Eugenia could go here or the humble mulberry, blueberry or Feijoa. I like giving recommendations on plants which are easy. The issue is what is easy is going to vary from person to person and zone to zone. However mulberries and blueberries are easy for everyone.



