In comparing the datasheets it appears that the 4007-9101 and 4007-9201 contain different power supply boards. The -9101 system has the power supply that drives conventional NACs. The -9201 system has the power supply that drives the addressable NACs. I don’t see an option to use non-addressable notification appliances on the -9201. It is meant for using addressable NAs.
It seems the 4007-9101 was meant to be more for the retrofit market to replace older panels that use conventional NACs where the wiring is not being replaced. The older less efficient NAs can be replaced with newer devices that draw less current (including SmartSync devices). It looks to me that the 4007-9201 is meant more for new installations where the advantages of addressable NAs can be used more easily. The IDNAC does recommend non-shielded twisted pair.
Keep in mind that the IDNet initiating devices and the IDNAC notification appliances are on separate circuits. If you go with the -9201 panel it looks to me that for Style Z (Class A) notification circuits that the 4007-9804 is needed. The Dual Class A IDNAC Isolator (DCAI); converts a single Class B IDNAC SLC input to two Class A or two Class B SLC outputs; provides short circuit isolation between each Class A or B output circuit; requires one IDNAC address; the total current remains controlled by the Class B input source SLC at 3 A maximum
Your local SimplexGrinnell office should be able to give you more details on these panels.