The wiki says the tag off_shoulder is to be used for when clothing that is normally supported by the shoulders is not, such as a bra, dress, or tank top strap being off the shoulder like in this piece:
post #3696121

Although, people seem to be tagging images with strapless dresses and what is described by many clothing companies as "off shoulder" clothing like sweaters
post #3769027 post #3680377

Also being put under that tag are those one shoulder only "flashdance"esque shirts
post #3705506

So I guess some of my questions would be, what would be a good way to clean this up?
Should these concepts each have their own tag or should they remain under one tag and the wiki be changed?
If separated, which concept should retain the off_shoulder tag, or should none and it be disambiguated?

I'd suggest that the intended meaning retain off_shoulder. After all, to truly be off the shoulder it must be intended to be on the shoulder to begin with.

The other two could be tagged no_shoulder_top and one_shoulder_top, respectively.

trevortheyeen said:
The wiki says the tag off_shoulder is to be used for when clothing that is normally supported by the shoulders is not, such as a bra, dress, or tank top strap being off the shoulder like in this piece:
post #3696121

Although, people seem to be tagging images with strapless dresses and what is described by many clothing companies as "off shoulder" clothing like sweaters
post #3769027 post #3680377

Also being put under that tag are those one shoulder only "flashdance"esque shirts
post #3705506

So I guess some of my questions would be, what would be a good way to clean this up?
Should these concepts each have their own tag or should they remain under one tag and the wiki be changed?
If separated, which concept should retain the off_shoulder tag, or should none and it be disambiguated?

shoulderless shirt and shoulderless sweater already exist, I think those tags need a lot more usage. With shirts like post #3680377 being not so uncommon, it's surprising people have been using a tag as vague as "off-shoulder".

I think off shoulder should be tagged as currently defined and the other situations should be tagged with bare shoulder instead.