Most any fairly recent smart phone does really well for YouTube. (If by excellent quality) you mean the video quality.
I recently got a go pro 8 for YouTube and found out my phone does just as good as far as quality.
The go pro has more functions and features, but they really aren’t needed.
For example the video below has a little shakiness in it and the go pro has super stabilization that filters that out.
My winterization video was all done with my phone and the Imovie software for the phone for editing.
