UPDATE: I've added the four non-raht versions of the quadruped forms.
I really like the Pahmar. (Not sure if the dagi can be considered bipedal or quadruped really, I imagine they walk on all fours or just two feet depending on the situation)
Using various Skyrim mods, I've mixed some together to create what my interpretation of what most of the Khajiit forms look like. It's good to have a reference when writing a story featuring them, for both me and whom reads it.
Some notes because some things may be a bit difficult to tell:
The Suthay, Suthay-raht, Tojay, and Tojay-raht have digitigrade legs and feet, the rest of the bipedals having plantigrade. (The feet for the tojay/tojay-raht look kinda bad since that body model didn't support the digi-feet mod)
The Cathay, Cathay-raht, Tojay, and Tojay-raht have a more physique frame, wider build - well, supposed to anyway, I couldn't really show that as much with the tojays as the mod to make them more 'buff' didn't support the body frame for them.
The Ohmes has no tail.
The Tojay has no fur.
The Dagi and Senche are the only pictures I could find of them that match close to what I imagine them to look like, and well, the picture of the Dagi happened to be wearing iron armour and a two-handed sword, it makes him look cute, but rather strange. XD Also the Senche is actually a Senche-raht but I scaled the picture down a bit to be a Senche, as I think the Senche-raht look a bit more gorilla like.
The raht's generally have a tad bit longer fur, thicker build, and taller height than the non-rahts, and also have curved ears while the non-rahts have pointed (this is an idea I added to the mix, it's not actually represented in the picture at all, but I think it'd help identify forms easier and explain a few extra things)
If you're curious of what brought me to imagining this interpretation, I wrote a journal called "The Many Forms of Khajiit" which explains most of it in detail. I intend to rewrite it eventually to encompass what I've changed and added since then.
The mods used for these pictures are as follows:
-For the Digitigrade Feet
'Digitigrade Beast Races Full DLC Edition' by Teh Husky
-For the Digitigrade Legs
'True Digitigrade Beast Races WIP' by Lightningo
-For the more physique Cathay and Cathay-raht
'A Better body scale for Khajiit and Argonian Male' by TS
-For the body model for the Ohmes, Ohmes-raht, Tojay and Tojay-raht
'Dagi-raht Race Reborn' by Nuska, Lylium and TheUnexpected
-For the clothes used by the Cathayraht, Ohmes, Ohmes-raht, Tojay, and Tojay-raht
'Cultural Armors - The Khajiit' by Kidhedera, using assets from 'Regal Huntsman' and 'Regal Assassin' by Dreamburrow, 'Crimson Ranger' by Patobek, and 'Cloaks of Skyrim' by Nikinoodles
-For the hair used by the Suthay
'ApachiiSkyhair' by Apachii
-For the hair used by the Ohmes
'Skyrim Hair Physics Project' by Xp32
-Lastly, for the chin facepaint for the Suthay and Cathay (in that it covers the whole chin rather than just part of it)
'More accurate Khajiit Chin and Lips paint' by Rainkitty
-For the Pahmar
'3 Pahmar Khajiit Followers' by Aziara
-For the Alfiq
'Cats Kingdom' by gg77
-For the Dagi
'Vicn Creature Pack' by Vicn
-For the Senche
No individual mod as far as I know, but does appear in various ones, but the actual creator seems to be GendrunDrup