[Qiviut]

There are a couple of patterns where the back is truncated (sort of) or a half round sort of design.

Links:

https://thecrochetcrowd.com/crochet-tranquility-trinity-shawl/

https://saltypearlcrochet.com/mermaid-tears-shawl/

https://www.ravelry.com/patterns/library/uwila

[MomwithHope]

Many thanks for the links!

[Valpal1]

That shaping is similar to Faroese Shawls, which generally have shorter backs and longer wings that can be wrapped around the body and tied in back.

https://www.google.com/search?q=faroese+shawls&rlz=1C1GCEA_enUS805US805&sxsrf=ALeKk02No-fvj0Y6zuze1etmf8gTFlg2AA:1604163896836&source=lnms&tbm=isch&sa=X&ved=2ahUKEwiVwu2ZqN_sAhXrHjQIHb4_Ap4Q_AUoAXoECAwQAw&biw=1422&bih=643&dpr=1.13