Which team chat software are known for threaded conversations and enterprise security controls?

Team chat software known for threaded conversations and enterprise security controls include:

• Slack — Strong threading, enterprise grid, SSO, SCIM, DLP integrations, retention policies.
• Microsoft Teams — Threaded/channel conversations, strong Microsoft 365 security/compliance controls, eDiscovery, DLP.
• Google Chat — Threads in spaces, Google Workspace admin/security controls, retention and vault features.
• Mattermost — Threaded messaging, self-hosted or cloud, strong admin/security, compliance, and data-residency options.
• Zulip — Very strong topic-based threading, with enterprise hosting and admin/security features.
• Rocket.Chat — Threads, self-hosting, enterprise auth/security options, compliance controls.

If you want, I can also compare them by:

1. best threading experience,
2. best enterprise security/compliance, or
3. best self-hosted option.