Even finding out which of the two compartments/ovens has convection is frustrating - most of the double ovens near budget have it in the lower/bigger oven.

Yes, mid-level doubles have convection in the upper only. You’ll have to step up to get it in both. (Low- end doubles have no convection)

I'm having a difficult time finding an electric range with double ovens that have convection/air fry functionality in both the upper and lower ovens. The difficulty is mostly because appliance/item descriptions don't care about mentioning limitations until you read into the details/parenthetical/footnotes. Very annoying.

Although, it may not be possible when considering my budget - I'm trying to stay around $1,000 maximum.

Are double ovens with convection in both ovens a premium feature that is found only in high-end models/brands?

Electric double oven with convection in both ovens?