Hokkaido Rail Pass for which train lines

Can Hokkaido Rail Pass be used for
1) JR Nemuro Line;
2) JR Furano Line;
3) JR Hakodate Line;
4) JR Semi Rapid Ishikari Line?

Covered all.

BUT 4) is a bit wrong, No "JR Ishikari Line", even section's nick.
https://en.wikipedia.org/wiki/Hokkaido_Railway_Company
"JR Hakodate main Line", Semi Rapid train name is "Ishikari Liner" is.
https://youtu.be/nGqouNl4KPs

Search again at HyperDia.

(small note)
1) and 3) lines name are "- main line" as official.
https://en.wikipedia.org/wiki/Nemuro_Main_Line
https://en.wikipedia.org/wiki/Hakodate_Main_Line
But not so important as calling even locals, they are just calling "JR", very simple way.

And if something wonders, ask at here if within open hours.
http://www2.jrhokkaido.co.jp/global/english/idesk/index.html

Thank you Amoc for the info. Very useful :)