I wonder if the first "morning glory" (or "trumpet-flower" design) weight could be American, and perhaps even 1960s or later? On page 100 of Jean S. Melvin's American Glass Paperweights and Their Makers, revised edition 1970, there is a vase and paperweight that seem to use a similar thick white flower with coloured bits decoration and a central air bubble - from the Labino studios.
I have no real idea about the other two - but they could easily be European work from the late 19th to early 20th centuries.