H, I, L, R Prefixes on approach procedures

The IF guide had a page where it explained what each of the prefixes mean in the approach. I have flipped through the entire guide multiple times since the update and cannot find the page where it explains it. Someone please help me. Thanks.

I is ILS, R is RNAV, I think L is for LOC and no idea what H is.

The right side of the screenshot tells you what the letters mean :)