Are all Flash characters in the comics accurate?

It's reasonably accurate. The show keeps many key elements and storylines from the comics, but there are some changes to make it suitable for TV.

It varies. Some MCU characters are very close to their comic counterparts, while others have some notable differences.

Overall, Peacemaker is reasonably faithful to the comics. Some details might be tweaked for the screen adaptation, but the core elements remain intact. The characters and their arcs are largely consistent.

Not really. Gotham takes some liberties and makes changes to the comic storylines and characters.

Not really. There are quite a few differences between Smallville and the comics. Some characters and storylines have been significantly changed.

It's quite accurate. The Shazam adaptation mostly sticks to the comic storyline and character traits.

Not always. Sometimes the Joker's character in various adaptations deviates from the comics to add a fresh take or suit the specific story.

It's quite accurate. The show mostly adheres to the key plot points and character developments from the comics.

The Flashpoint Paradox takes inspiration from the comics but makes certain changes to fit the cinematic or storytelling needs. Some elements might be similar, but there are notable variations.

It's not completely accurate. There are some differences in character development and plotlines.