I'm having a difficult identifying the type of insulation behind a section of drywall. The home was built in North America around the 1940s. It's undergone several rounds of renovation projects and there's evidence of building materials from the '40s, '60s, '90s, and the early aughts.
I've looked through some photos over at Inspectapedia's insulation identification page. After looking closer at the fiberglass identification page I did see the following image which bears some resemblance to the insulation in question (please the second and third images). However, I have no experience identifying insulation and I'd like the feedback of those who are more experienced.
I plan to install an electrical receptacle on the stud here. I'll need to accommodate for the insulation while doing so in a safe manner. I won't hold anyone liable for opinions shared, and I will use PPE when interacting with the insulation either way.