leicester city
As of my last update in October 2023, the most notable team to reach a final without ever winning is the Netherlands national football team, which has finished as runners-up three times in the FIFA World Cup (1974, 1978, and 2010). Additionally, clubs like Bayer Leverkusen and Valencia have reached the UEFA Champions League final without securing a title.
Brighton
The Sharks franchise has never won a Super rugby final.
I think it was Cardiff.
chelsea
4 times.
4 times.
6
Arsenal did but no London club has reached it.
Real Madrid.
Thorugh March Madness 2008, the University of Missouri has never been to a men's final four.
Holland in the J. Cruiff period was considered a strong challenger but holland have twice reached the final and both times lost the final to W. Germany.