I am going to take the minimum stance. Oliver supplies you with a decent starter "kit" to get operating. Sheets, dishes, and all the other stuff - is very subjective. Every one of us has stuff we purchased - and don't use (if ever).
Take a very minimum starter set of the "other" and pick up what you find you need as you go. One is very seldom far from a store that has the basics.
Look at all the suggestions - and evaluate as you gain experience.
Chocks, leveling blocks, etc.., just depends on what you like - I have found the Anderson stuff very useful, along with some home made 6x6 blocks. But you may find other to your liking.
Just ignore this post if you have excess $$ and like to buy stuff that looks needy - but is in fact - not.
Enjoy the process
Supersize Life - a blog that has some tried and true examples. https://supersizelife.com/
RB