2nd try: Okay all you brilliant crocheters, why is nylon crochet thread different? I've fallen down a rabbit hole and would love to discuss sizes and S-twist and Z-twist and chainette, oh
DK Whims Merino Crochet Yarn
2 Omega Nylon - Creative Yarn Source
Amazon.com: 3x50g Blue Yarn for Crocheting and Knitting;3x51m (60yds) Cotton Yarn for Beginners with Easy-to-See Stitches;Worsted-Weight Medium #4;Cotton-Nylon Blend Yarn for Beginners Crochet Kit Making
The Cloth Line Yarn Crochet Knitting Yarn For Beginners With Easy To See Stitches Worsted Medium Cotton Nylon Blend Knitting Yarn Cotton - Walmart.com