Patons Ritz yarn was a bulky yarn. It was about 12 ply.http://www.ravelry.com/yarns/library/patons-ritz
because its pertty
Patons Jet Wool is a 10-ply yarn, which makes it a bulky weight yarn. This construction provides a thicker texture, making it suitable for quick knit or crochet projects, such as blankets and warm garments. Its composition typically includes a blend of wool and acrylic, offering warmth and durability.
This does not seem to be a current yarn. I suggest you contact Paton's via their website.
Weight: Bulky / 12 ply (7 wpi) Gauge: 16.0 to 18.0 sts = 4 inches US 9 - 5.5mm
Patons has many weights of Tweed wool, so look through the Paton link and see if you can find the specific wool you are looking for and have an answer that way.
It appears by looking at the Patons link I attached, that this yarn is still available. If you don't know where to find it in your area, contact Patons and they would be able to direct you to an online or retail store in your area. (at the top of the page of the Patons link, is a Store Locator tab that you could also click on).
Patons Patex Boucle is a worsted weight yarn, typically classified as a 4-ply yarn. Its boucle texture creates a unique, textured fabric, making it popular for various knitting and crochet projects. Always check the specific product details for any variations, as yarn specifications can sometimes differ slightly.
The difference between 8-ply and 4-ply wool, can depend on the weight of the plies. Some 3-ply yarns have heavy weight (fatter) plies, which knit up heavy worsted, where 2-ply lace weight yarn plies are much lighter (skinnier) plies that knit up very light/lacy/small.If I were to guess, the 8-ply in question, may have smaller plies than the 4-ply. I think if you double the 4-ply, that would be too much. You should try a gauge swatch using the 4-ply singularly, and maybe adust the needle size.
Patons Shadow Tweed wool is a medium weight yarn that is classified as a 4-ply or worsted weight yarn. This yarn typically has a soft texture and is suitable for a variety of knitting and crochet projects, including garments and accessories. The tweed effect adds visual interest, making it a popular choice for textured patterns.
Working with 1 ply wool is not easy. It takes forever! The simplest thing is a scarf.
Patons