I do not read a lot of middle grade. However, I have seen Nevermoor making the rounds on bookstagram and booktube and it looked like a fun read. I picked it up on audio and found it to be an excellent fantastical story. 

 

The characters and the plot are not all that diverse (unless you are including animals and paranormal creatures.) However, there are themes common to most middle-grade books. It is about a character in a miserable family setting whisked away to a fantasy world where they find out they are special. It has a character that feels unseen and another that is up to no good in a respectable way. 

 

It was fun and I will be continuing with the rest of the series.