The middle infield is a rather odd position to consider, as far as the Hall of Fame goes.
Middle infielders have, in general, been known primarily for their defensive prowess and considered worse offensively than most other players due to their harder positions.
Additionally, many see drop-offs in their performance around their early 30s (specifically, 32-34). Therefore, you may be surprised to find out that that the Hall of Fame voters have less trouble electing middle infielders than, say, third basemen. Nine second basemen and ten shortstops have been elected to the Hall of Fame, compared to six third basemen (I was shocked too).
In any case, with these players manning the positions, it’s unlikely those middle infield Hall of Fame numbers will stay there for long.