I put these clubs in tiers personally (in no particular order):-
Tier 1:- Barcelona, Real Madrid, Man Utd
Tier 2:- Liverpool, Bayern, Juventus, Flamengo, Corinthians, Boca, River Plate
Tier 3:- Sau Paulo, Palmeiras, Inter, Milan, Celtic,
Tier 4:- Rangers, Marseille, Benfica, Ajax
Tier 5:-...