I think i could be the right one for your purposes.
-Mostly beginner and some intermediate Wix tasks —> checked
- Laying out text on assigned pages, sometimes migrating… —> checked
-Style, font & color ----> checked
-Setting up pages with placeholders for graphics to be added in later> checked
-handle wix-databases (quering, filtring, saving changing and so on)-> checked
- An eye for good design (typography, layout, color, brand) —> checked
-You rock at Wix and have at least ~1 year experience in it → rock on Velo 
- You typically respond to emails within a day → should be possible → checked
-Working from all over the world in different languages? → (russian-german-english-french) checked!
You take your work, but not yourself, seriously. 
That’s exactly me!
Some extra----> You are a coding- enthusiast —> checked!
Sorry for my bad english skills 
, i try my best.
Interessted in a partnership? —> russian-dima@hotmail.de 
my very beginning projects —> https://russian-dima.wixsite.com/meinewebsite
And i am almost everywhere 
—> https://community.wix.com/partners/forum/networking-opportunities/looking-for-partners-to-work-with