In my nursery, Barnsby strain (early) pink lady seems like an easy to manage tart apple that might ripen early enough in the northwest. There’s also Ashmead’s Kernel- but it is a russet and russets tend to attract codling moth. I have what is termed an early ripening Goldrush from Adams County nursery that might also be useful if you need earlier ripening- it ripens 2-3 weeks ahead of Goldrush and seems less susceptible to early defoliation usually brought about by Marsoninna leaf blotch- it tends to hammer most yellow apples. However, it is not a sport but a mixed variety child of Goldrush with some Honeycrisp blended in, giving it a texture served by larger cells ( a different kind of crunch) and less tartness at harvest. It is also a larger apple. Still, enough like Goldrush to please a Goldrush lover and enough like Honeycrisp to please all those lovers of that variety. Less like Honeycrisp than Crunch-a-Bunch, which seems like a green Honeycrisp without much Goldrush quality at al even though it was marketed as an early ripening Goldrush.
Wickson crab is quite productive with tartness and an overall “wow!” taste profile. Big flavor in a small package as the breeder intended.