Damn.. this exam is tough. But I bet the SA Pro is going to require a lot more effort. I've got 3 AWS certs so far, and it is in part thanks to Linux Academy. Your content has always been more "real-world" focused.
Some pointers for future takers:
Learn about VPC Endpoints for S3 and access control for the endpoint / S3
Read up on egress gateways and how they perform the same tasks as NAT Gateways
We all love linux, but dont forget about custom monitoring for Windows Instances with CloudWatch
CodePipeline & CloudFormation working together
AWS Service Catalog and it's purpose
Personal Health Dashboard
AWS System Health Dashboard
Learn how to use OpsWorks to create an RDS DB
Good luck & continue tagging Anthony with your achievements. Your success inspires me!