Top 10 bronze:
Top 10 silver:
Amumu is the only one with a dash or blink. Mobility is massively overated by low elo players because they suck at using it. Please find something else to complain about.
See that's the funniest thing I always notice; the top 10 win rate champs tend to act contrary to whatever people are circle jerking to at the time.
Except Mundo and to a lesser extent Brand, but the lack of Zed, Rengar, and Yasuo are a thing to note.
Technicallity, really.
Amumu has a dash, but it's considered a gap closer.
Rammus has Q
Voli has Q.
i think the problem here is that people look into lcs big plays champs. and most sheep. and in this case. bad players pick them. hence the lower winrate. for example. to me vayne is one of the hardest champs to win against if shes good. meanwhile. more than half the champs you mentioned have very little skill cap. and just straight up a mix of damage/tankiness and ease of use
They all still have a blink 
:3
flash op!
You forgot that blink isn't the only mobility.
Trundle - Speed boost and slow Brand - stuns for DAYS bro MF - slow and speed boost Mundo - Permaslow, who needs mobility when ur q is perm exhaust on a target. Voli - Huge speed boost, toss over/stun, fear malz - best single target stun in the game, ranged silence, plague of death, dot and leave the area VK - who needs mobility when you can ult from 900 feet away... and stun... and slow... Zyra - Snare, and multiple knockups and slows.
Blink/Dash is over rated. Stopping enemies from fleeing is the over powered part. Maybe you just don't get that?
To be fair, the top ten on champion.gg (so only plat+) are:
Malphite is the only one with a dash/blink, and its tied to his ult. does that mean mobility is always overrated, or that the immobile champions got overcompensated due to their lack of mobility?
Voli, Trundle, Rammus, Garen, Susan, Mundo, and Sona all have speed boosts. Several of them also have high base speed and all the tanks build DMP.
It is mobility when you can run so fast that you can escape most things and eventually catch nearly everything.
Silver people don't usually complain about champion mobility. They complain about damage or survivability for the most part (e.g. Mundo, Garen, Brand, Volibear, Nasus, MF).
