Our primary Tomato efforts are in the greenhouse and every year i start around 50 plants; keeping 4-6 for our own usage and the remainder are given to folks from Church. The majority of which end up grown outside! I’m surprised at how well “Some” of them do in our area.
As a result, i’ve started branching out a bit from our standard “Celebrity” to include Stupice, Morovia Div and Mat-Su Express. Most years these do pretty well outside.
Mid Valley greenhouse here in Wasilla has been trialing and breeding tomatoes for 30 years and have a couple Russian Determinate types that REALLY do well up here. Might be worth a look?
www.midvalleyak.com