Getting references after a company closes - first time posting

My manager was laid off too and I am unsure who to use as a reference. I have read a lot of threads here and could not find my exact situation. HR only confirms titles and dates. Who did you use?

Thanks for writing this out. I went through something close to it 8 months ago, and it settled down once I kept a simple log of every call and form.

A client reference worked well for me. It shows you deliver outside the company too.