From left to right:

(1) CD 1095 [010] No Embossing short height 1 1/2"

(2) CD 1095 [010] No Embossing tall height 2"

(3) CD 1085 [010] No Embossing tall height 2 1/4"

(4) CD 1085 [010] No Embossing short height 1 1/2"

I guess the mold allowed a floating plunger for variations in glass gathers. These are the height variations that my wife Nikki has in her collection of these styles.