The Red Sox comparison at second base is somewhat muddled with the absence of Dustin Pedroia who most certainly could be easily compared to Bobby Doerr, but Pedroia is a large 2019 question mark. Then Ian Kinsler has moved on and that leaves Eduardo Nunez as a possibility for second base, but Holt did play second for 56 games in 2018 and has other connections that strike my memory.
Holt and Billy Goodman have some common threads. Both hit left-handed, both are considered utility players, neither was or is considered exceptional defensively, and both represent a baseball MENSA level IQ.