I would guess famous Premier League football teams might be a good choice simply because its only a matter of rearranging and developing material freely available from the websites of each club most of which should be well polished.
that would be my most famous list.
You could also do just famous London Premiership Football Clubs in which case that would be Arsenal Chelsea and Tottenham Hotspur. Might be more manageable yet more interesting with perhaps dual themes and information on London as a common thread/context?
Alternatively you could just make the whole presentation on
“Why Manchester United are the best team in the world”
No prizes for guessing my team