Hi Yazeed,
Please let me know whether all of your smart devices are 802.1x auth capable?
If all of your smart devices are 802.1x capable then you can use only one ssid with different enforcement profile.
Clearpass profiller feature can differentiate smart device and computers (Windows and MAC) so you can assign different role/vlan to staff corporate device, Staff personal device, staff personal smart device.
I will recommend to use role(With same vlan) with specific access like smart device only internet and specific servers (If require), Staff corporate device full access etc.
Regards,
Milind