1) this list isn't entirely complete, but it's a start.
2)Since many yarns are ok knit at a half stitch per inch difference than what their label may say (depending on what you're making and what type of fabric you desire), you may want to check out the options at a gauge either side of how we have them listed. For example, the label on Cascade 220 suggests that it can be knit at 5/in on a US 7 or 4.5/in on a US 8. We've listed it under 5/in on a 7 because that's my preference for most sweaters, but for someone else, or even for myself for a scarf, knitting this same yarn at 4.5/in on an 8 may be preferable.
3) we haven't listed Lace weight yarns here, you can them out by clicking on those highlighted links
4) some of the sock yarns might be great for gloves, scarves, wristlets, and lightweight cardigans etc, so if this is your project in mind, you might want to check out the sock yarns too!
Plymouth Neon Sock
Fingering Weight Yarns (7 sts/in, typically on US 3)
Ella Rae Extrafine Merino
Bliss Rialto 4 ply-machine washable
Meadow by The Alpaca Co - in store, coming online soon
Nordlys by Viking
Sport Weight Yarns (6 sts/in on US 4 or 5)
Zooey by Juniper Moon
Cascade Sport Weight - non-superwash
Cascade Sport Superwash
Bliss Eco-Baby Cotton - organic
Cascade's Ultra Pima
Rylie Linen blend
D.K. Weight Yarns (5.5 sts/in on US 6)
Findley dk by Juniper Moon
Mia by Debbie Bliss
Arroyo by Malabrigo
Debbie Bliss Rialto Extrafine Merino
Lavold Silky Wool
Phoenix Print by Trendsetter
5 sts/in on US 7 or 8
Kenzie by Skacel
Knightsbridge by Fiber Co.
Acadia by the Alpaca Co.
Moonshine by Juniper Moon
Plymouth Merino Superwash
Knit-Col (4.5-5 sts/inch)
Findley Herriot Alpaca
Cascade 220 Wool
Encore...tweed, Coffee Beenz, Colorspun, and original
Maxima by Manos
4-4.5 sts/in on US 9 or 10
Cyochin by Noro
Mirasol's Sulka Alpaca-Wool-Silk (Free Trade)
Eco-Duo and Highland Duo Alpacas
Homestead Wool by Plymouth
Taiyo by Noro
Silk Garden by Noro
Kureyon by NOro
Bulky Weight Yarns (3-3.5 sts/in on US 10-11)
Herriot Great by Juniper Moon
Chunky Weight Yarns (2.5 sts/in+ on US 13-17)
Encore Mega...including the new Mega Colorspun!
Rasta by Malabrigo