Conversation so far:
who are the longest serving managers in the premier league
The departure of Arsène Wenger from Arsenal F.C. in 2018 made Eddie Howe the longest-serving active manager in the Premier League.
how many clubs have competed in the premier league
Forty-nine clubs have competed since the inception of the Premier League in 1992.

Question: which have won titles
Self-contained rewrite: which clubs in the premier league have won titles