ADS-B Exchange [0] has a tag for military aircraft, right now it's showing a whole bunch of military aircraft (German, Belgium, Norway, Netherlands, UK, US) over central Europe.
Note that even the Swedish spy plane is using Ads-b while flying along the baltic International border zone taunting Russia but the migs answering the taunt is not. Also flying dangerously close to the spy plane (10 m reported once). However the US spy planes are also mostly flying with the transponder on there.