So, I didn't watch every speech from the DNC, I still want to watch what Bill Clinton had to say and I didn't get the chance to listen to Kamala yet, either. But I did get to hear some of the others.
Obama: I think he's still resentful about his mic drop moment (at least I am a president) that became egg on his face. Complained about Trump having a cult of personality when, hello?! Obama, Trump isn't the only one lol! And he did a bit of the hope and change thing.
Michelle Obama chose to sermonize on not "taking more than you need" as she has several houses worth around $20 million and has almost $100 million (conservative estimates around 70mil) in the bank. She wanted to push a bit of statism for some reason. Also suggested she was in favor of transing kids.
Walz said... well, he really said fluff. Not really his role to push the agenda so I guess his 20 minutes or so was appropriate.
Bernie Sanders went on about his conversion from socialism to establishmentism, really. Billionaires is always his main focuse (used to include millionaires too, until he became one). But he approves of Harris/Walz because they are the closest to his ideals.
All of them were 33% in their praise of Democrats, 33% praising the state and 33% focused on insulting Trump.