Should add a winners poll to this thread.
This CL is extremely close and there is no clear winner, so many amazing sides left in the tournament and a lot on the same tier. If I had to rank I'd put it...
Tier 1
1.Barcelona
2.Juventus
3.Man City
4.PSG
(in that order)
Tier 2
5.Real Madrid (Has winners + experience xfactor)
6.Bayern Munich
7.Liverpool
8.Atletico Madrid
(also in order)
Tier 3
9.Spurs
10.Dortmund
11.Man United
12.Ajax
13.Lyon
14.Roma
15.Porto
(all similar level)
Tier 4
16.Schalke
Tier 1 summary:
Barcelona has the best players and starting 11, no one comes close to Messi, even now. Juventus has top notch players + hardened defence, very good overall balance, good manager and just added serial winner Ronaldo who could push them over the edge. Man City has very good players + the best manager in the world, slightly less talent than Barcelona and (probably) PSG, destroyed the PL last year but need to push on in CL now. PSG probably has the second best starting 11 talent wise, and decent manager. Neymar, Mbappe and Cavani are a disgustingly talented trident up front, backed up with a midfield containing Veratti. Extremely talented. Play in weakest of top 5 leagues, Ligue 1, so need to prove themselves more in CL.
Tier 2 summary:
Real Madrid have won it 3x in a row and kept largely the same team, but they are playing underwhelming this season and lost Ronaldo + Zidane, probably deserve to be second tier now. Bayern Munich have a massive wealth of experience and talent still, I put them below the Tier 1 teams all round though nowadays, another giant club failing to continue their domestic dominance thus far. Liverpool have a great balance between attack and defence, but need to win something to be considered Tier 1, a few players in team aren't as talented as Tier 1 teams. Atletico have a great manager, experience and are also an extremely hard working team and well drilled unit.