If you are just using the standard PureCloud UI, then I would go with the multiple scripts idea. I would probably make the background color on each script a different color so when it pops during the alert the agent has a quick visual on what type of call it is without even having to read anything.
If you are using auto-answer, you can also use a Set Whisper Audio action in the Inbound Call flow before the Transfer to ACD action to set a very short audio file that will play in the agent's headset telling them what type of call it is right before connecting the customer.
------------------------------
George Ganahl GCP (PureCloud) ICCE
Principal Technology Consultant
Genesys
------------------------------