All this talk of centre backs with pace never really sits with me.
A defenders job is to be physically strong, good in the air, can play good long and short passes and most importantly read the game. If you add raw pace to that you have a Premier League/ International defender.
I think the word we should be looking for is reasonably athletic. JOC for me ticks every box and is reasonably athletic. That makes a really good centre back. Maguire ticks every box and is reasonably athletic, not the quickest but he reads the game so well it helps hide any deficiencies.
What you find is that a centre half with pace needs to use that pace because he cant read the game..... IMO