The first thing that came to my mind when I looked at this picture is the Real Madrid - Barcelona final. Actually, another option is that on one side in the final there will be either Real Madrid or Liverpool, on the other side either Barcelona or Bayern. This is what I see at the moment, maybe some surprises await us, and Liverpool has already beaten Real Madrid in the group stage, and Barcelona's game doesn't always go well either.
Why did you miss to mention Arsenal and PSG and it seems like they have the ambition to be champions. Some teams are indeed favorites to enter the final such as Real Madrid, Liverpool because for the time being they have managed to get through the previous round with impressive performances. I might prefer the UCL trophy to be brought home by a team from the Premier League, be it Liverpool or Arsenal because last season Real Madrid became champions and if they continue to dominate it will be very boring.
Leverkusen will face Bayern Munich, The grudge between these two teams continues to burn because they have become rivals who have raised interesting competition in the Bundesliga and this time they face each other again in the Champions League. Yes, it will be lucky for Leverkusen if they can beat Bayern Munich because they are very motivated to make their history in the Champions League.