Perhaps Gradia [0], Pinta [1], or Krita [2].

[0]: https://gradia.alexandervanhee.be/ [1]: https://www.pinta-project.com/ [2]: https://krita.org/en/

Photocraft has been working alright for me. I really struggled to learn GIMP, and I haven't found any easy lightweight image editing tool that replaces Paint.NET for me before trying Photocraft. It's still a little confusing since I'm not used to photoshop-like bindings and layout, but it hasn't been too hard to adjust. (I also only ever use it for small simple edits, drawing, cropping, color gradients, background removal, etc.)

I easily modified pinta to do exactly this. You mean overlay, right? It can overlay, draw, manipulate, and I added a better file navigator so I can see which imagery I want to overlay to begin with. My use case was scientific in nature. What is yours, if you don’t mind my asking?

https://photoflare.io/ is the one I've found to be most usable. Pinta is just unpleasant to use at high resolutions and it's buggy.

Use KolourPaint, it's a windows 9x/XP paintbrush clone with only a few improvements tacked on.

IrfanView in Wine, f12 opens a really old-school paint toolbox.

GIMP of course.

KPaint

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