I'm sorry, but besides the maybe the example of aircraft insurance that pip lists,
who cares?
I've never had an employer look at my logbook and ask, "now how much of this time was in a EMB-145 LR as opposed to ER, and can you differentiate between a 172M and SP for us?"
I guess the only difference i'd log is if its an RG, but even then, thats why you have a "complex" column in your logbook.
Its your logbook, do what you want with it.