1, 2, 3, 4,
5, 6, 7, 8
Notice the yellow splotches on #8, even on Naples yellow stand oil shows up yellowed.
Dammar in #1 position is the only one that did not yellow in five years.
The darker spot on #6 is a dense paint test.

#1- Wax and dammar, the easiest to paint with. No gloss.
#2- Stand and turpentine, the turpentine essence evaporates very fast and must be replenished often. High gloss.
#3- Venetian Balsam. High gloss.
#4- Cold pressed Linseed oil. No gloss.
#5- Venetian Balsam and oil, good glaze, use very thin. High gloss.
#6- Stand oil and wax, the end of the stroke breaks off, stand oil would rather stay sticky. Low gloss.
#7- One part paint, two parts wax, a great transparency extender. No gloss.
#8- Three parts Stand oil, one part cold pressed linseed oil, balanced slippery and sticky, smooth. Medium gloss.

Cera Colla is an emulsifier, water or mastic works well with it, flat unless buffed, Egyptian.