Solutions Architect Associate is the way to go - definitely the broadest coverage and most approachable. Won't get you a job by itself but I would find it a bit odd if I was hiring someone who works with AWS already and doesn't have this.
I was an AWS employee for 5 years, launched a new AWS service, and don’t have that. I guess my dreams are crushed without the Solutions Architect Associate credentials, lol.
I was an AWS employee too and found that people building services basically lived in a completely different world, hardly ever actuallyusing AWS - so I'm not surprised.