Distrowatch has a good summary of most distributions. I don't believe you can do side by side, but of you want to click through various distros it might be a good resource.
Is a total count of distros given anywhere in distrowatch? I tried using search with no filters, but in the returned list, I couldn't find DamnSmallLinux, so I guess it wasn't complete.
Try Googling for comparisons between Linux distros (e.g., Debian vs. Ubuntu) and you get dozens of hits that are about 200 words and talk about the GUI and package installer. I want to know more than just the topical issues. I know that some distros compile with different networking #defines, others have different service control, and important low-level stuff... But it seems there isn't a deep-dive out there, just lots and lots of chaff.
Hey thanks for the link! I always run headless so I guess I'm interested in knowing the "top 10 most relevant differences" that don't include the GUI, but that just caters to me, I guess.
Obviously if a group of users feel passionately enough to create a new distro, they do it for damn good reasons, I'd like to put those reasons side-by-side. Maybe all these years I've been using the wrong distro?! Over the past ~24 years of using Linux, I've moved from RedHat in the late 90's to SuSE to Ubuntu, but just because that's what was easiest. It only seemed like the package managers changed from my POV, so I guess there is no difference for my needs if that's the case.
https://distrowatch.com/