I actually like this book by Yoni Nazarathy https://statisticswithjulia.org/ https://statisticswithjulia.org/ They have a book on Mathematics of DL too which

I actually like this book by Yoni Nazarathy https://statisticswithjulia.org/ https://statisticswithjulia.org/ They have a book on Mathematics of DL too which has several of the concepts covered here. (Disclosure: I am slightly biased towards this since I've known the author by online interactions)