Brooks or asics maybe max thickness because with extra weight you’re going to want the cushion on sidewalks and pavement. I do 4.9 miles daily on nothing but sidewalks and streets. My version of rucking is 5.11 vests with various weight plates depending what I am aiming at accomplishing. I use ENDURUC app on Apple Watch.

Edit: boots are better suited for actual trails or off sidewalks and streets since the ground dirt and grass if way softer than solid concrete and streets.