Which pass should i buy for a 14-days trip?

Hi, i am so confused on which pass should i buy. whether to buy a JR pass or a JR regional pass?

Here is my itinerary:

25/12 - Arrive in Kansai Airport and will head to Kyoto immediately.
26/12, 27/12, 28/12 - In Kyoto
29/12 - Nara (day trip)
30/12 - Depart from Kyoto to Osaka
31/12 to 3/1 - In Osaka
4/1 - Depart from Osaka to Kobe
5/1 to 6/1 - In Kobe

And within Kyoto, Nara, Osaka & Kobe - Can i use the JR pass or do I need to buy a separate pass?

Kyoto - Keihan Railway
Osaka - Osaka Amazing Pass.

Please advice!

Thank you :)