I passed the AWS Certified Database Speciality Exam in May. That makes my 11th AWS certification. The database specialty seems to have split out the database content from the Big Data exam, which was retired in April of 2020. I did SME work on this exam and completed several workshops before its release.
Update 4/8/2021:
I reviewed the acloud.guru course and it seems to cover the exam topics covered in the exam blueprint
With the removal of the Alexa Certification, I now have all 11 AWS certifications.