Hello,
I'm designing a new font, tilted (by the wind), so not exactly italic, variable font, named "Westwind" (for evident reasons).
I consulted the encyclopedic knowledge of Luc Devroye to know if there was ever an example of this style of font.
The answer was "no" by his experience.
I created an axis "Curved". Here is an example of the 2 masters:

The font is still in development, not interpolated nor kerned.
I'm questioning your knowledge to know if you ever met such a tilted font. I didn't find one.
Thanks for your help!
Comments
I created the effect with the help of the Fontlab staff, explaining the creation of a custom axis, here CURVE.
I began by slanting the glyphs, then determining a model curve and applying this model to the slanted verticals.
To facilitate the process, I chose an "easy" font of mine with vertical stems and corners in multiples of 100 ("Amusette High").
Of course the slanting angle and model curve can be set at whichever value or shape.
Regarding the end of word/sentence, I never dreamed of that!
I'll try the effect with my other typefaces when I'm finished with this one.
I'll keep you posted if you wish.
Thanks again for your informations!
After some problems with the custom axis "Curved" (didn't find enough documentation on this), I happened to create some "Eastwind" (to the left) masters by manipulating the axis.
I am now updating these new masters. Could take time!
Note: Windows and some Windows softwares don't accept a TrueType Font with only a custom axis (at least in my experience). Adding an "Italic" one, even without an Italic master, resolved the problem!
The "Fences v.3" desktop organizer for Win 10 didn't accept with a message like "Use only TrueType fonts..." for the tiles titles.
"Win 10 > Parameters > Personalize > Fonts" displays the masters in a curious way: they are all displayed using the same master and sometimes using the same name when you modify the font size.
I promised to keep you posted.
I finished the font with the help of the Warp action re-introduced in Fontlab 8.
This action replaced my work "by hand" based on a personal Global Mask.
The font is now on daFont under the name "Crosswinds".
The ideal to demonstrate the font is an animation but I cannot join a video here.