JR pass use on train lines

Hi there,

I'm just a bit confused as to what trains I can use the JR pass for. I understand that it covers JR lines and also shinkansen (except Nozomi and Mizhuko). But it says it also covers limited express trains, express trains and local trains. How do I know which limited express trains, express trains and local trains it covers?

So for example, I searched up on Hyperdia my train ride from Kansai airport to JR Namba. One of the suggested routes was to go from Kansai Airport to Tennoji via Limited express haruka 40. And then from there take the JR Yamatoji Line Local to JR Namba. So when it says JR "something" line I know its covered by the JR Pass. But how do I know if the Limited Express Haruka 40 is covered because it doesn't say JR anywhere.

And then there are other routes that says to take it from Kansai Airport to Shinimamiya via Nankai Ltd. Exp. Rapit 2. And from there take the JR Yamatoji Line Rapid Service for JR-NAMBA. Does the JR pass cover Nankai Ltd Express as well since its a limited express?

So my main question is how do I know which limited express trains, express trains and local trains are covered by the JR pass?

Any help would be much appreciated.

Kind regards,

Lily