steuben ? fry ? venini ? salviati ?

I did a google lens image search and got blasted with several many claims that these stems are steuben - fry - venini - salviati - the list was endless... I am pretty confident that they are not Fry considering the elaborate double hollow / air / airstem - the blue reeding / threading is very vibrant - steuben Persian blue ? I'm at a loss... each stem measures 5 1/8" tall with 3" mouth opening - appreciate any help!