Almost EPL 2. Only five clubs I think who have not been Premier League.

Birmingham
Blackburn
Bristol City
Cardiff
Coventry
Huddersfield
Hull
Ipswich
Leeds
Leicester
Middlesbrough
Millwall
Norwich
Plymouth
Preston
QPR
Rotherham
Sheffield W
Southampton
Sunderland
Stoke
Swansea
Watford
West Brom