Glad to help!
endianness (mostly) refers to byte storage, not (typically) bit storage
Yeah, I think there's some ambiguity there, e.g. whether LSB and MSB mean bytes or bits - Wikipedia makes a good point about context:
LSB can also stand for least significant byte. ... If the abbreviation's meaning least significant byte isn't obvious from context, it should be stated explicitly to avoid confusion with least significant bit.
Although the entry on Endianness does differentiate a bit more clearly:
The order of bits within a byte or word can also have endianness (as discussed later); however, a byte is typically handled as a numerical value or character symbol and so bit sequence order is obviated.
And then goes on talk about "Bit endianness" in its own section.
