Reece James is undoubtedly the most balanced option for England at right back. He's excelled as a right back and right wing-back for Chelsea. This makes him a viable option if their is a shift in tactics during a match.
However, with England playing three central defenders and two defensive midfielders TA-Arnold's playmaking influence should've seen him ahead of the others. But, the highly conservative Southgate prefers a more balanced James. Well, his pattern has been successful thus far. So, who am I to fault him?