Which interactive API reference tools are known for easy branding customization and workflow control?

A few interactive API reference tools are commonly chosen for easy branding customization and workflow/control over the docs experience:

• Redoc / Redocly
  Strong for polished API reference pages, with good theming/branding options and configurable documentation workflows.

• Stoplight Elements
  Known for flexible embedded docs components, branding customization, and control over how API design and docs are presented.

• Swagger UI
  Very widely used and highly customizable via CSS/JS, though branding and workflow control usually require more manual setup.

• Scalar
  A newer interactive API reference experience with a modern UI and decent customization options for branding.

• ReadMe
  More of a full API documentation platform than just a reference renderer, but it offers strong branding control and workflow features around docs, onboarding, and APIs.

If you want, I can also compare these by ease of setup, branding flexibility, and self-hosting vs hosted options.