Walt Crawford has done quite a bit of interesting work in this area, he's got a book out that looks at OA journals here: https://waltcrawford.name/goaj3.pdf ht

Walt Crawford has done quite a bit of interesting work in this area, he's got a book out that looks at OA journals here: https://waltcrawford.name/goaj3.pdf https://waltcrawford.name/goaj3.pdf More writing here: https://waltcrawford.name/goaj.html https://waltcrawford.name/goaj.html I'm not sure that's exactly helpful for what you're asking about, but it's a good read for anyone interested in this area.