Looks like they all are different versions of D-marks.
5 looks like an old residential carbon protector D-mark. This looks like the oldest,
1 is the newest version, 3 & 4 are the same they look like it takes a can wrench to open but looks like a splice box being used for a d-mark, 2 just looks like a newer version of 3 & 4.
2 cents...
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