As of now, the Dark Tower comic is not ongoing. It reached its final issue some time ago and there are no current plans for new releases.
Yes, it is. The Dark Age comic is still in production and new issues are being released regularly.
The Dark Tower comic is not a one-to-one copy of the book. While they draw from the same source of inspiration, the comic may make adaptations to better suit the medium of comics and the visual storytelling.
Yes, it is. The Boys comic is still ongoing with new issues being released regularly.
Yes, it is. Dilbert comic is still being produced and published.
Yes, it is. The Galaxion comic is still being produced and updated regularly.
Sadly, the TWD comic isn't ongoing anymore. It wrapped up its story and left fans with a memorable finale.
As of now, the Invincible comic is still going strong. The creators are continuing to tell the story and fans are still enjoying it. There's no indication of it stopping anytime soon.
The Boys comic is indeed still ongoing. It has a dedicated fan base, and the publishers have shown no signs of stopping it anytime soon. New installments keep coming out, keeping the fans engaged and excited.
Yes, it is. The Fable comic continues to be published with new installments.
Yes, it is. The Sonic comic series is still being published and has new issues coming out regularly.