For the rest of the AFC West, we are
61-55-1 against the Chargers (
https://www.footballdb.com/teams/nfl...mvsteam?opp=16)
63-53-2 against the Raiders (
https://www.footballdb.com/teams/nfl...mvsteam?opp=23)
and, for former members of the AFC West, the Chiefs are
33-18-0 against the Seahawks (in AFC West from 1977-2001) (
https://www.footballdb.com/teams/nfl...mvsteam?opp=16)
and
5-7-0 against the Buccaneers (
https://www.footballdb.com/teams/nfl...mvsteam?opp=30)
The Bucs were in the AFC West in 1976, although neither the Bucs nor the Seahawks, the other expansion team that year, played a typical divisional team schedule that year or in 1977. Instead, each of these two teams were "swing teams": each played all of the teams in their conference and one another in both years, with the Bucs starting in the AFC and the Seahawks in the NFC in 1976 and then switching in 1977.)