Here is a screen shot that is pretty close to what you are looking for.
This was done by using the Builder Dimension 21 as the normal door marker and adding an associative label (Door Window Label 21). You would have to place this associative label manually for each door, and possibly adjust its location, but you'd only have to do it once, and it's pretty fast. The D/W label can use the door ID, of course, and you'd have to turn off "Fit Frame to Text" to have a consistent size. HTH.
EDIT: Oh, and once you get the first associative label at the right spot, you can "Eyedropper" it to get the offset as a default, and then labels should come in at the same location for each door. You can then do about one label per second or two, so not that bad.
Richard
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Richard Morrison, Architect-Interior Designer
AC26 (since AC6.0), Win10