Quick thoughts based on watching these all on my phone, so I may have missed things:
1) Fantastic Four promo gave me chills. I want so badly for those characters to be done justice and so far so good. Reed is campier than I imagine but the wink to the camera makes me think he's at least self-aware (unlike what I recall from Ioan Gruffudd's Reed - campy but socially incompetent). As long as he can be the leader the team needs when they need it, then I'm totally on board.
2) Captain America still looks good. I worry about the ample reshoots but with Giancarlo Esposito's character confirmed to be the leader of the Serpent Society, this makes me think that maybe the previous iteration of the group just wasn't working, and they needed an appropriately intimidating face. Also that voiceover in the trailer (same as from the last trailer) is The Leader, played by Tim Blake Nelson, who hasn't been seen since he got mutated at the end of The Incredible Hulk in 2008. Wild.
3) Daredevil. I'm not going to worry too much about the dialogue in what was essentially a sizzle reel. What's interesting is that what was initially going to be 18 episodes has now been broken up into two halves, so season 1 will be 9 episodes and season 2 will film soon. Based on this trailer, there will be a lot to cover - maybe a lot of one-offs? - because I spotted Wilson Bethel's Bullseye from season 3, Kamala Khan (Ms. Marvel)'s father (for whatever reason), Kingpin obviously, and the Punisher.
I missed them but I read that Karen and Foggy were in the trailer. I believe that guy in jail / the person in the white vigilante outfit is White Tiger. And Reddit says there's a character who may be some newish Daredevil villain named Muse. So that's a lot to cover - maybe some as teases for S2 and some as one-episode villains or something.
4) Ironheart. I've been tentatively curious about this one for a while because the rumors are that Anthony Ramos plays Parker Robins, aka the Hood, a criminal who finds a mystic cloak that he uses to commit crimes and run the criminal underworld. That's relevant because (probably a huge spoiler) the hood is traditionally powered by Doctor Strange nemesis Dormammu, but the rumors are that in the MCU it will be fueled by Sacha Baron Cohen's Mephisto(?!?). Lastly, Alden Ehrenreich is rumored to be playing Ezekiel Stane, an Iron Man villain and the son of Obadiah Stane from the very first Iron Man film. He's listed on wikipedia as Joe McGillicuddy which is clearly a fake name.
So the Hood, Mephisto and Ezekiel Stane. Again, a lot to cover. Maybe Stane will just be set-up for Armor Wars or something like that.
Lastly, 5) Agatha. This trailer kind of sucked the intrigue out of the last trailer. I guess this was the "spooky edit" but I don't currently have much interest in watching a bunch of witches I don't know go down some perilous witch road I've never heard of. Folks online thought that each episode may have its own genre or tone (a la WandaVision) and I hope that's true, because other than something to watch during Halloween season, there's not much drawing me to this one.