LÖVE

I'm trying to decide whether to use Love2D, so I have a couple of questions

what are the more popular classes implementations?
I saw there is a list of classes implementations on the wiki, though I'm not sure how up to date that is. If anyone here is familiar with the PlaydateSDK classes implementation, being similar to that would be great but by no means a requirement.

other common libraries
what other common libraries are there for working with things like collisions, physics, LDtk, etc.

IDE's
what IDE's support Love2D well?

For common and/or popular libraries, see awesome-love2d repo on github, which includes a list of class implementations. For physics/collisions specifically, developers tend to roll their own, use the built-in box2d implementation (love.physics module) or something like bump.

As far as choice of code editor or IDE goes? People tend to just use whatever they're comfortable with: Visual Studio Code, Sublime Text, Notepad++, Zerobrane Studio, and so on and so forth.