jamesrt:
It is, however, ColorOS rather than a "pure" Android; but that's really not that much different to Samsung/One UI anyway from a practical end-user perspective; the N7.2 experience was so bad it's put me off using a Nokia again for the short term - I'll do the research again next round, of course.
"Pure Android" these days are Google Pixel and Nokia. Samsung runs One UI and OPPO runs ColorOS. Both are really good and you won't notice much difference from a pure Android as it's mainly a skin only.