confused about chiffon like fabrics.

Just because you don’t call them that it doesn’t mean they exist.
You can go into any fabric shop in the UK and buy ‘silk chiffon’ or ‘crepe chiffon’ they all exist and are different.

The only one that has a ‘wrinkle’ is crinkle chiffon, the rest are completely flat.

You don’t get everything in Pakistan any more. You don’t get the same quality of chiffon and even things like the brocade’s that were once available. Now people go around calling jamawar or banarsi ‘brocade’. Most of the fabrics are imported as they always were but the quality of imports has decreased dramatically.