I'm in a desert region of 8a, similar except summer here is three months of over 100F, and very low humidity, low to no rain.
Artichoke did good for me last year. They're still green and growing well right this minute with several nights in the twenties. 20F right now, so I'm not sure if they'll die back some or not.
Asparagus is doing well for over five years now. Not great harvests, but that's more because of my neglect than anything else.
I'd like to try tree collards, against a south facing wall. Not sure if they could handle it, but in the right microclimate maybe.
Like you, some of the others you mentioned. Gojis do really well here it seems.
Grapes do well here.
Dino Kale will survive the winter no problem here, but I
think it's a bi-annual, although I kind of think I read that some
people cut the flowers off and they keep going for years.
I just planted a bed of strawberries a couple of weeks ago. Hoping they do well for years to come.
Mainly interested in what the other experts on this site have to add. I want to focus on perennials that do well in our zone as well.
Good luck!