Truly glideless mids that come to mind are Demon, Drone, and a couple small diameter Innova utility mids. For flex shots you're describing, glideless mids aren't very "workable". You're better off throwing a slightly OS mid that has some glide and have it slowly flex back.
I have more luck with my Drone than my Buzzz. I can't get a Buzzz to flex back reliably. Different strokes. I like a quick flex. I can throw slowly flexing shots with putters.
Also, flex shots are just not the easiest shot to throw, and the glide gets me in trouble. The more overstable/glideless, the less trouble I can get myself in. A few degrees too much anny and a glidey mid never flexes, and gets trouble on the right. Too much hyzer, and it slowly fades to the left into trouble. A glideless overstable, too much anny and it still fights out of it. Too much hyzer, and it spikes. Still not where I wanted to be, but usually not too far away.
I really need to work with neutral and understable stuff. I don't bag anything on the underside of neutral unless I'm planning a roller or uphill shot. I have some power control issues (another reason I like glideless).