According to the following Readme page for testbed topology:
https://github.com/Azure/sonic-mgmt/blob/master/ansible/doc/README.testbed.Topology.md

Only 5 typology [t1, t1-lag, ptf32, ptf64, t0] are listed and introduced on the page.
But there are more topology such like "t0-64" and "t1-64-lag" now and they don't have any document for user to understand the detail.
Suggest there should be document like above Readme page which has topology information about those new topology.

Describe the results you received:

No information introduced by any document for new topology.

Describe the results you expected:

A wiki page or Readme page to introduce those new topology.

Additional information you deem important:

None.

Please let me know if any, thanks.

Sincerely yours,
Kenie Liu