All peer supports, by definition, have lived experience, typically as consumers within the mental health field. However, that is a very broad field and not all parts may overlap. Someone who recovered from addiction may not have experienced psychosis, and someone who experienced psychosis may not have knowledge of what having a personality disorder feels like.
My lived experience is primarily in the lasting effects of childhood trauma across the lifespan. That's a bulky phrase, so I choose to identify as trauma-focused. However, though my primary lived experience is in trauma, its effects, and healing from it, I also have experience with neurodivergence, having both ADHD and late-diagnosed autism. My lived experience having late-diagnosed autism is going to be substantially different than, say, a man's experience if he was diagnosed at the age of three.
I also have lived experience with chronic illness and chronic pain, which both have mental health components, and am happy to support individuals experiencing these issues.