There’s some like MI-07, MI-08, PA-07, PA-08, OH-09, ect, I would consider based around smaller/midsized cities and not really suburban
CO-03 is decently rural.
Seats like WA-03, NM-02, TX-15, TX-28, and CA-03 are hard to classify because they have a lot of things going on at once
US House districts have gotten so large and the country so built up nearly every US house seat is going to have at least some urban or suburban areas; there are very few “truly rural” seats.
good point. OH-9 has more midsized urban and rural voters than suburban. Ohio is weird that way