I’m not even sure that many of the examples given are being more machmir for example- not saying a bracha on a mitzva aseh shehazman grama. Maybe it is the ashkenazi who is machmir because she is saying the bracha?
Maybe a sheitle is more a chumra than a hat/tichel? Maybe a hat on top of a sheitle is most machmir? I think most of these examples are just differences in halacha, except for the ones in the original OP.
