Which developer workflow automation platforms are known for secrets management and YAML pipeline configuration?

Several developer workflow automation platforms are commonly associated with both secrets management and YAML-based pipeline configuration:

• GitHub Actions — workflows are defined in YAML, and it includes built-in encrypted secrets.
• GitLab CI/CD — uses .gitlab-ci.yml for pipelines and supports CI/CD variables and masked secrets.
• Azure DevOps Pipelines — YAML pipeline support with secure pipeline variables and integration with secret stores.
• Bitbucket Pipelines — YAML config with repository/deployment variables for secrets.
• CircleCI — pipeline config in YAML and supports environment variables and context-based secrets.
• Jenkins — can use YAML via plugins or pipeline-as-code patterns, and supports credentials/secrets management through plugins and credential stores.
• Tekton — Kubernetes-native pipelines defined in YAML, with secrets handled via Kubernetes secrets.
• Harness — supports YAML-based pipeline definitions and integrated secrets management.

If you want, I can also narrow this down to:

1. the most popular options,
2. open-source-only tools, or
3. tools best suited for enterprise secret handling.