Source...
3DCOAT's "initial subdivision (number of polygons)" is a Catmull-Clark level of division.
Software used
• 3D-COAT2022
• Lightwave 2020
• Blender 3.2
In 3DCOAT, when you "import a model for pixel painting", you can select "Initial subdivision (number of polygons)" in the import settings screen, which seems to correspond to the subdivision ratio when using Catmull-Clark subdivision (CC). This seems to correspond to the subdivision ratio when using Catmull