Original MW was quite poor in the case of variety. So I thought it would be nice to take attention to all cultural differences in island.
I divided them on cultural and for all "factions" for all distributions (tribunal, bloodmoon, morrowind)
1. Common base for many.
Not for particular group, mostly for poor ppl. Very similar to original with quite dull colors. About knots it would be good to keep like braided rugs and shag (fabric) for doormats. As sth in lower quality. It would be nice to add sth like Petate for the very poor. Color palette should be quite monochromatic and not too vibrant. Good place to play with hue/sat and levels for assets milking.
2. Ashlanders
There is sth like knots per square inch, so it's good to some fabric like that.
Very tribal feel. Native American style.Color palette: Red, grey, white
examples

3. Nords
Just furs (Skyrim has many what I remember), I think we don't need any special rugs for them.
4. Imperials.
Rugs similar in style to French Aubusson and Savonnerie. I think we can keep color palette in dark blues and greens with very pale yellow/orange in minority. Maybe do it more strictly (less color range)
examples

5. Hlaalu
I think fit here very Persian style (Isfahan). Heavy depicted ones with many floral elements, overwhelmed by vivid reds, yellows and oranges with some blue elements. (New rugs examples are vintage too) High level of detail compare to Redoran and Telvanni.
Old one are now refs
examples

old one

6. Redoran
Samarkand and khotan style with very pale yellows/oranges and reds. It can be enriched with some native dunmer elements.
examples

7. Telvanni
I didn't find any examples which will really fit here. Most close is sth like below
examples

But this is more about color palette (deep blues/ dark greens) than patterns. Patterns will be various variations of this.
8. 6th house
Style is already set. Look at banner in right top. Sth in this tune, only several examples.
9. Mournhold Palace
Sth similar like that but yellowish (I preffer red/gold) and with Hlaalu insignia and some fancy patterns (write down if you have some ideas).
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Most examples posted here are from this source (with exception of ashlanders and isfahan (new) for Hlaalu) So if we would not get acceptance for using images, we can be very "inspired" of them because all creators of rugs are just dead.
I think we can use landscape tapestries (of course if they are not lore-breaking, get rid of some emblems too) for imperial from public domain. Like below:

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Ive been asking people to do
Ive been asking people to do this for weeks. lukkar always delivers.
did drago ask for this? either way its purely the designs we need, not the surface detail or any shading.