Glass and Godzilla had both great trailers, though the later has a bit of corny dialogue, if you ask me, when it tries to explain the magnificence and importance of the monsters is a hit or miss. When it shows it it's just great though.
Shazam and Aquaman are okay, but both lack something. I think Shazam's anchored by Levi's performance, which looks like it suits the character perfectly (more than any other DCEU actor, in fact, with the possible expection of Cavill when he's allowed a normal Superman moment) but the overall direction feels stale, like it's just following the leader in regards to the MCU (and limiting itself to an imitation of its more vanilla entries like Ant-Man). Last but not least, the way they show his transformation working has to be the laziest and most sterile performance of special effects in any multi-million CBM I've seen. Aquaman has a bit more style, but man, Momoa, as hard as he tries, can't seem to convey anything. He's not likeable, he's not impressive, he's not charming... The guy just isn't lead material, I'm afraid. Also, the stuff when he's a kid looks straight out of CW show. I loved Thrones of Atlantis in the comics, though, hopefully they nail the story and that'll be enough to convince me.