Few other things:
Alonso didn't show anything, I think he did whole session on single set of meds?
I'm now thinking hamilton had quite a lot of of fuel on softs, he only improved 0,15s and that's just too little going from hard to soft. For example piastri improved 9 tenths going med -> soft.
Verstappen's fastest lap wasn't that good. Big snap in T1, understeer in T4, oversteer in T10...
From what I've seen RB is fast on straights (big shock). vs sainz: +4 kmh to T1, equal to T3, +10 kmh to T4 (here ferrari is holding back probably).