Who do I ask for a reference after a layoff? after 17 years as a bookkeeper

My manager was laid off too and I am unsure who to use as a reference. I do not usually post, so bear with me. HR only confirms titles and dates. Who did you use?

I kept a note of my results so my references could be specific. They appreciated it.

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