They are going to be more similar than different really. Both lean heavily on the B part of the name (applied Behavioral analysis, and cognitive Behavioral therapy), and at their core are learning new skills or behaviors that more effectively navigate the world (one not inherently designed around an autistic experience of the world(as if there was just one)). They are both about making behavior changes that lead to being more comfortable long term, and that usually revolves around practicing behaviors (often pretty frequently, which can be uncomfortable short term).
Don’t wonder to hard, many of the things discussed are common and not necessarily a disorder. And when they might be it’s often paired with the wrong disorder (this would be depression, not really ADHD for example). Take most of these meme and a humor communities with a giant grain of salt (or skepticism).