Glass luring Dunn with misguided tower destruction threat - Superman The Movie/Superman IV
implied hero v villain superpowered fight amidst skyscraper destruction finale as the world watches - as seen in Superman II/Batman89/Spiderman3/Incredible Hulk/TDK/TASM/MOS (also Darkman/X1/Matrix 3/BvS but without spectators)
weakened Dunn meeting his end drowning in water - Superman The Movie
I just realized all those are pretty much Superman
What else
XMen - Dunn/Wolverine (& Superman). Mr Glass/a combination of Xavier & Magneto (& Lex Luther). Dunn & Mr Glass' relationship in UB parallels Logan & Charles in X1/2, in Glass its more Wolverine/Magneto (& Superman/Lex). The Beast = Beast. Also McAvoy and Taylor-Joy = XMen actors. Clover organisation = similar to the one in Logan wiping out mutants.
End battle at the hospital/McAvoy death = similar to end battle at the hospital/Wades death in Deadpool 2