Which customer identity platforms are known for GDPR controls and privacy-friendly consent management?

Several customer identity / CIAM platforms are well known for strong GDPR controls and privacy-friendly consent management. Commonly cited options include:

• OneTrust Consent & Preference Management
  Strong focus on consent, preference centers, cookie/privacy compliance, and auditability.

• Usercentrics
  Well known for GDPR/consent management, especially for web/app cookie and privacy consent flows.

• Cookiebot (by Usercentrics)
  Popular for automated cookie scanning, consent banners, and GDPR/CCPA compliance features.

• TrustArc
  Broad privacy compliance platform with consent and preference management capabilities.

• SAP Customer Data Cloud (Gigya)
  Offers consent and privacy controls, profile management, and preference handling for customer identities.

• Okta Customer Identity Cloud (Auth0)
  Supports custom consent flows, privacy controls, and extensibility for GDPR-oriented implementations.

• ForgeRock Identity Platform
  Enterprise CIAM with policy, consent, and user preference management features.

• Ping Identity
  CIAM capabilities with consent and consent-aware identity orchestration in enterprise environments.

• Microsoft Entra External ID / Azure AD B2C
  Can be configured for privacy-conscious identity flows, though consent management is often implemented via custom app logic or integrated tools.

• IBM Security Verify CIAM
  Includes governance, user consent, and privacy-oriented identity management capabilities.

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

1. best for enterprises,
2. best for developer-friendly implementations, or
3. best for cookie/website consent specifically.