There's one other abandoned station, abandoned longer than the others you photographed, that's Claremont Parkway which was at or around 171st Street (between Morrissiania and Tremont) . This one was abandoned by NYC around the late 50s or early 60s. I do not know the exact date but it was before I started college (1963) and became familiar with this territory myself. You can find remnants of that too, at least on the track 3 side where there is an indentation in the stone wall as at the other station sites. There is an industry or warehouse of some sort on the track 4 side, at track level.
By the way it's good to see this part of The Bronx has become safe enough again to hang out in with a camera!!