Okay, I understand what you mean now. Let me try to explain it.
Duncan Miller etched patterns are exclusive to Duncan Miller glass patterned blanks. Like the other popular elegant glass manufacturers, Duncan-Miller also made different mold lines, which are more commonly referred to as “blanks.” Sometimes Duncan-Miller’s blanks were sold as a stand-alone pattern. When etching was added, however, the name associated with the pieces usually corresponds with the etch rather than the blank. In Duncan-Miller’s case, the popular First Love pattern can be used as one example.
Now... There were many "decorating houses" of the era, one of the most famous (and the one i'll use as an example) was the Lotus Glass Co. of Barnesville, Ohio. Lotus did not actually manufacture a single piece of glass, but instead purchased blanks from all the major manufacturers, including Duncan Miller, New Martinsville, Paden City, Bryce, Cambridge, Central, Fostoria, Heisey, Imperial, Lancaster, Mid-Atlantic, Morgantown, Paden City, Tiffin, Viking, West Virginia Glass Specialty, Westmoreland, and Weston. The etched patterns this and all "decorator houses" applied, have names. These names are exclusive to each decorating house. Sometimes that "name" is nothing more than a number, etched pattern no.17 for example. It's confusing I know. That's why it is hard to identify some of the etched patterns on vintage glass, be it elegant or otherwise.
The patterns can be identified, it's just harder to do. You first have to know the decorator house in order to figure out the pattern names associated with that company.
You have blanks with etched patterns exclusive to the glass manufacture and you have those same blanks with etched patterns exclusive to the decorating house that did their own etching.
(Very important note) These pieces were marketed under the decorating house name, not from the company that actually made the glass blanks.
To sum it up, you should always pay attention to the "etching design" because it does matter. For the most part etched patterns produced by the actual glass manufacturer will command better prices than their competitive decorating counterparts.
Confused yet, lol?