Which is the best team in lichess

In which way? No of people or total rating strength when all the ratings of all the members is combined?

"best" is a relative term. therefore, there is no such thing as a "best" team, just a team that people agree upon is the best for them. however, such a team doesn't exist necessarily due to the wide variety of opinions on lichess.

i think checking the best team is not to go with numbers or ratings but people should see teams which are very friendly leaders are good and the team is very much active i try to maintain these 3 things in my team