Kaz, it's hard for me to say because many varieties have not fruited for me yet! But of my fruiting varieties so far my list would be;
1-Vernon
2-Nettie-tree ripened,Yellow wholly leaf seedling
3-Robert's Rainbow
4-Pike, Cuccio,Michele
5-Santa Cruz, Redlands
But looking forward to Lemon Gold,Leroy,Malibu #1,plus newer varieties to me from you!Sadly other 46 varieties have not fruited for me yet! Well not true some have fruited once but hard to judge without multi-year production.