S&M participated in multiple random leagues where TOFU and THOTA didnt thus why we are ranked slightly below. Random leagues with sets of best-of-12 are the easiest way to lose ranking. Even this year FALL went ahead of S&M because FALL avoided participation in random league where S&M lost ranking points.
But i agree this list isa good representative of top 10 ever. LHDD had only one surge in their performance but in their old days they were just average clan.