Depends where I am
County 1
GOP: Some hyper rich executive or some kind, probably Indian or Asian, lives in the suburbs, mostly moderate in nature.
-or-
Bitter old white person who remembers the good old days before "The Revolution" that hit the whole area in the 60's and still whines about radicals, moved as far away from the water into a suburb as possible.
Dem: Literally every SJW-Millennial stereotype in the book, also every liberal sellout yuppie stereotype too.
County 2
GOP: Either a farmer, an evangelical, or an educated, white civil engineer...or all of the above.
Dem: Transplant from Houston, Austin, or Dallas.
County 1 SF? County 2?
Can't be SF, there's no real suburbs inside the County, you have to cross the bridges or head south down the peninsula. The rich in the county from my experience are divided into two. There are the Old residents who live somewhere with a nice view, in a beautiful house built before the depression. This is often around the Presidio or on the Bay facing side of Twin Peaks. Then there is the new tech money residents, who live with expansive apartments downtown - if they want to live in the city rather then one of those nice peninsula suburbs like Burlingame. Both areas vote hard Dem though.