Windows-only recommendation so this is only somewhat related - but if you want a powerful, (mostly) well-thought-out, (seemingly) lightweight screenshot taker + editor on Windows, do have a look at ShareX[1]. It's completely free and you can tweak various workflows and map them to key combinations. I've had a "manual screenshot -> optional editing -> upload to imgur/save to clipboard" workflow bound to a mouse button…
Windows has the built in Snipping Tool which is quite similar to what macOS has: https://support.microsoft.com/en-us/windows/use-snipping-too...
I have Command + Shift + 4 configured to save to clipboard aswell now.