Excuse the long post rich of information.
I have finished stickering of another batch of five puzzles:
Four of them are extended rhombic Skewbs:
RIMG0567.JPG [ 352.42 KiB | Viewed 1294 times ]
first row; first column:
not yet revealed; somebody wants to make a guess?
I could be derived from the systematic arrangement of the mods.
first row; second column:
Four sides extended: LF LB RB RF
The stickering method is somewhat lazy. I know.
first row; third column:
Six sides extended: UF UR RF DB DL LB
This one is actually made from a octahedral skewb extending a rhombic Skewb like this would have the same result.
second row; first column:
Rhombic dodecahedron Skewb
Zero sides extended: 
Not an industrial one but one made by Tony Fisher.
Included for systematic reasons.
second row; second column:
Eight sides extended: UL UF UR UB DL DF DR DB
Made from an industrial RhombicSkewb the longer edge length is exact the distance between two opposite faces of a rhombicDodecahedron Skewb.
second row; third column:
Six sides extended: UL UB RB LF DF DR
I like this shape