the first one looks like two rectangles sewn together until the armhole and then a drop sleeve is sewn into the top side seams and grafted at the top, that or it's a tube with armhole shaping.
There's a lot of shrug and bolero patterns out there. That just looks like an oversized one.
The other one, the only thing I can allude to is that it is possible that it was knitted mostly in entrelac.
I'm thinking you will probably get advice and support on how to write the pattern yourself than getting someone else to try to write it here for you.