Hi, I understand you want these Angular menu components styled a bit differently. I can help you with this, 1. You can send me the details as designs or text and the current code, and 2. I'll write the CSS needed to adjust your current components and deliver the style rules as a file.
I'm a Javascript developer and web designer with years of experience and I've worked on countless sites and JS applications, Material UI included, writing custom CSS and HTML code.
Feel free to contact me.