I have not seen this done before on Scratch, so I did it myself! Click the green flag and follow the instructions. This is 100% free to copy! Just make sure you give credit where it's due. Either export the list or backpack the sprite the list is in (language) to use it in other projects!
Ranges: 1-48: Regular Languages 49-64: Hidden/Secret Languages (all of them were painstakingly tested) 65: Auto Detect (Try it out by clicking the new Auto Detect Test button!) Script is in the sprite "Auto-Detect". It is not perfect. Credit to @hello34090 for the idea and some (not all, like just 5) of the hidden languages, and thanks to @qucchia2 for the Auto Detect idea (at https://scratch.mit.edu/projects/336559736/ ), which I extended to work with this list. Music is Shuric Scan Key Gen Original by T-PorT. Everything else is by me. Comment if I am missing a language and I will make sure it works! If it does, it will go in the list!