Here is what I'm aware of in terms of CMDB integrations:
With Versio.io we offer an Asset and Configuration Repository (CMDB), which, in contrast to conventional CMDBs, recognizes the relationships between data from different data sources (topologies) and historizes all data.
Appropriate importers for Dynatrace, Azure, VMWare etc. are available. Furthermore we provide importers, with which you can extend the monitoring of Dynatrace with the following things:
You can find a current overview here: https://www.versio.io/versio-io-platform-importer-integrations.html