UX researchers, UX designers

Wanted to understand what kind of setup do you all have to create a prototype with UX? Do you have dedicated UX researchers? Do you involve UX designers in the call with client ? Do you try to cover all the cases in the figma as no one reads the PRD ? Do you try to keep true data in figma because if 5 people are reviewing, 2 will focus on data and provide comments. Etc.