Should Nishigori_Atsushi_(style) be a tag?

There are a lot of posts in the search style_parody panty_&_stocking_with_garterbelt but none of the pics really credit Nishigori Atsushi himself, who I assume is the sole character designer (https://www.animenewsnetwork.com/encyclopedia/anime.php?id=11605)

I guess it hasn't been made bc he doesn't really have a defined single style? His character design does vary between the Gainax stuff he worked on (https://www.animenewsnetwork.com/encyclopedia/people.php?id=12568). Or is it simply that no one just thought to make a Nishigori_Atsushi_(style) tag yet. Just making sure because I wouldn't mind creating & populating it

I don't think so, if you're talking about the Panty & Stocking style. Like you said, most of the other things he worked on have a different style from P&S. Just check out the artist tag you linked. style parody+panty & stocking with garterbelt gets the job done.

Edit: also consider that it's Imaishi's style, but again he's directed shows with a wide variety of styles.

makes sense fair enough