90% of the portfolios I see our cookie cutter. It's usually hi! I'm so and so and I am a UX UI designer, and then they jump right into their portfolio pieces.
If you can find my portfolio ( just my last name.com), you will see I use the homepage to introduce myself and I have the case studies on a completely different page.
As a pure UX designer I also downplayed any visuals I did not create myself. I mainly focused on the process, the problem, and the solution.
The number one thing employers want to see is if any of your projects move the needle. My last project resulted in a projected revenue increase of almost $30 million, and my project before that increase the net promoter score by 16%.
It can be very difficult to get metrics on a UX project but if things are tagged correctly for analytics, you should be able to get some metrics from the product manager or the analytics team.