Apparently 9/10 of these all are either netorare or netorase

Every time i search for gyaru, doujins with gyaru-oh with no gyaru keep on appearing. It's better if it is renamed to Yarichin

This is a very specific type of male in doujins. Usually depicted as having blonde hair and tanned skin. But generally it's a vague description of a "yarichin" type character that doesn't exactly match those physical characteristics. They could be bald or have slicked-back hair as well.