In Salvation Run, the revelation Felicity has been a Skrull since halfway through the third season of Arrow explains scores of her behavior and actions from her harsher attitude to willing to sacrifice people at Monument Point, able to knock out Black Siren with one punch and recover so quickly from a serious back injury besides a special microchip that somehow has never been duplicated since.
Chloe Decker is surprisingly chill with Lucifer being the Devil, especially when compared to her canonical Freak Out — but of course she would be, as the Snap was personally a huge trauma and Lucifer helped her through it. In front of a multiversal apocalypse that almost destroyed your family, an acquaintance of yours being a fallen Angel registers lower on the disaster-o-meter.
Distant Cousins has Lena explicitly state that open mind control wouldn't appeal to Lex's ego as he wants people to worship him naturally rather than through "force". While Lex attempted to use mind control in Supergirl when the sixth season started, it's not hard to attribute this shift in tactics and motivations to residual trauma and fear from witnessing the Crisis; after seeing the end of existence, Lex may have been "concerned" that he wouldn't have time to win people over naturally before the next big threat and decided to compromise on that area in the name of ensuring his own victory.
In Another Side of the Glimpses by The Pighead, it's revealed that the Wild Card destroyed special icebergs that have affected the Multiverse by altering events of various timelines. L1701E's Temporal Tete-a-Tete examines some of those effects, cleverly tying in various Infinity Crisis stories in the process, revealing several of them happened thanks to the Wild Card's actions.
In Hand and Foot reveals that Wong accidentally sent the Gargoyles to a world inhabited Darkwing Duck rather than their home reality. While this appears random, the Gargoyles and Darkwing can be considered part of the same "section" of the multiverse, as both were originally created by Disney.
A low-key example mixed in with Surprisingly Realistic Outcome; when the heroes managed to undo the Snap within a few days as opposed to the five years it took the Avengers in canon, it is noted that their actions only restored those who were killed by the Snap itself. As a result, there were still numerous casualties caused by, for example, planes and cars crashing because their drivers had vanished in the Snap, and this time everyone has to deal with the immediate consequences of their losses, as opposed to coming back five years later with the superficial damage dealt with.
In Hand and Foot explicitly presents us with an individual example of this issue and its devastating consequences; Vanessa Marianne was killed when her helicopter pilot was a victim of the Snap while he was piloting her, and with her dead, Fisk has become increasingly unhinged about how he does business.
