How can I create a map object to display channel data

I have several sensors (some custom, some not) that have several channels apiece. I'd like to get access to the channel data to be able to display in different formats.

There are only a couple built-in map objects that display sensor data: "Data table: Channels" and "Status Icons: Channels." The latter won't even work - it says incompatible, the object only supports type of "sensor." Which is strange because the object is a sensor.

So I'd like to build any kind of visualization around my channels, specifically around their statuses. What placeholders are available for this? The only one I saw in the built-in template files was a table using content of "channels" and specifying columns that way. I tried adding "status" to the columns but that displayed nothing.

Thanks!