Tiki taka cannot thrive anymore efficiently because teams now set up with fast paced attackers, fast paced attacking midfielders a holding midfielder and fast paced full backs, who can perform double high press on any teams that try tiki taka.
Tikitaka, really? How many years passed since the last season of Pep in Barcelona?
When Pep left the club, tiki taka was dissapeared gradually and what Barcelona have played recent seasons is too far and very different from the original Tiki taka I know of.
The worse thing for Barcelona is Messi is older and consequently his form has gradually reduced as well. Soon Barcelona need to find a new legend who will be able to bring them back to trophy competitions.
Liverpool prefers hit and run and cross football, and Simeone tackled that with close range pressing.
Liverpool has a tactic like Ajax in the past, and recent years is Dortmund but they played better than Dortmund because they have some better key players, Allison, Dijk and Salah.
A. Madrid, as always, is a defensive team and Simeone seems to have better tactics for his team and the art of defence has been grown up by the coach. To compare between Mourinho and Simeone, I think Simeone has adapted better than Mourinho.