For the ecobee thermostats, I'd recommend Universal ecobee suite from @storageanarchy. Here's the announcement from him on community.hubitat.com. I find it to be considerably more versatile than the built-in ecobee app.
For the Schlage locks, I'd recommend using the built-in app Lock Code Manager. I'd also recommend that you have a few z-wave+ range extenders around your house. It will make your z-wave devices, but especially Schlage locks, work much better with Hubitat. There are numerous threads on community.hubitat.com where @waynespringer79, myself and others have commented on the dramatic difference range extenders have made to our z-wave locks with Hubitat.
For the MyQ, there are several integrations. Here's one that I use.
If you get Caseta dimmers/switches, you will need to get a Caseta Pro Bridge 2 (L-BDGPRO2-WH) for them to work with Hubitat.
