Grass ID

Moved into a new property and was told lawn was mostly fine fescue, and the usual poa & weedy grasses & possibly rye. Previous owner removed some trees and reseeded patches, which are quite dark, see attached photos (ignore meso bleaching). Tried to ID via plant app but no luck. Would this darker grass be a type of tall fescue? Slightly wider blade than FF. I’m familiar with FF but this darker grass looks good, possible to overseed TF over FF and gradually change?