Source info: https://roadmap.sh/react
Also, please note that the list below is exhaustive, and the items are listed in no particular order. You don't need to learn everything listed in the picture, however knowing what you don't know is as important as knowing things.
Please note that the list is opinionated, and you might have different opinions than those of the author. Having said that, we would love to hear your opinions and incorporate them in the picture if suitable.