Trojan Skipper you beat me to what I wanted to put with your two posts. Most younger fielders have no idea that there are four parts of the groundball - short hop, coming down, in between hop and the worm burner. Best way to judge if it's one of the first three is to get a good "V-Cut" and see the ball from the side.
Hardest ball to catch is one right at you - that includes the outfield. Hot shots not much you can do except let your muscle memory / body control take over and hope for the best. But a routine / typical groundball get a good "V-Cut" and come at it from the slight side and you can see where the ball is so you end up staying down on the ball.