At what level?
intro: freedman, Pisani, purves. Very clear and accessible.
Intermediate/advanced: casella and Berger
Advanced: Bickel and doksum
Overview of ML and modern stat methods: efron and hastie
You are spoiled for good choices frankly.
What’s the best textbook you have read about X? In general the answer is “the third one.” By that time things sink in and the third book seems super clear and understandable.