Toronto FC and Vancouver Whitecaps?
Wolves?
Villa were very successful early on. Most of the league titles and cups are more than 100 years ago. So I'll guess Villa.
Yes, Aston Villa lost their Top Flight status at the end of season 1935-36 after a run of 44 consecutive seasons in the Top Flight of English Football.
Football League Alphabetical Positions by Clubs from Season 1888-89 to 2012-13
I love that chart. Am I misremembering or do you have another version in the order the clubs entered the league (i.e. original twelve first)?
One suggestion. It would be easier to see transitions between divisions if the background colors were coded by color instead of the text. You could indicate champions by a brighter shade of the same color
Just checked the answer and your page about top flight records. Love your disclaimer about Arsenal!
I can remember someone saying that Coventry City had a very long run in the top flight. (Just a guess)
The obvious candidates have been named or ruled out. From your question a few days ago, Villa just missed out (1888-1935/36?). None of the recently succeswsful clubs have had long spells in the top flight (Leeds, Forest, Chelsea).
I suspect it must be a club with early success. Maybe Sunderland.