Integration with Passwordless.dev?

[SwimlaneBuilder]

I'm trying to get a handle on the options available to users with ASP.NET Core auth, MSAL, AADv2, Identity Server, Fido, YubiKey, etc.

And this.

Is there a more universal sample that takes more platforms into consideration?

I need a single location to add user sign-up/sign-in, and unsure how to add this option to Azure B2C, or local deployments.