There are 2 fonts (with variant) in this thread.
1. San Francisco (Official iOS 9.x Font)Revert to Stock Note 5 fonts - DOWNLOADa. Variant 1 : Original Untouched with antialiasing and hinting preserved - DOWNLOAD2. Cocon Light ... Just because I like it (Modded for size and hinting) - DOWNLOAD
b. Variant 2 : Rounded Corners + Slightly bolded (with antialiasing and hinting) - DOWNLOAD
c. Variant 3 : Rounded Corners + Slightly bolded + Condensed (with antialiasing and hinting) - DOWNLOAD
Download and flash in any N5 recovery like TWRP/CWM.
DIFFERENCE BETWEEN NORMAL AND ROUNDED FONTS
Although difference seems subtle, it makes a huge difference in viewing the text on screen.
San Francisco (Original untouched)
San Francisco (Rounded + Bolder)
San Francisco (Rounded + Bolder + Condensed)
Cocon LIght (Modded)