Here is a simple Grade filter for Substance Painter modeled after the Nuke node. It has controls for lift, gamma, gain, tint for each, and is linear. I found the built-in offerings for color correction to be either overcomplicated or oversensitive.
Free Download: Substance 3D Painter – Grade Node (Nuke Style) (gumroad.com)
Demo video:
Designer graph:
The setup is pretty simple. After a conversion to AcesCG linear and splitting out the alpha channel to maintain it for output, the lift, gamma, and gain operations are each applied individually in pixel processor nodes that apply the math. For simplicity’s sake, I didn’t implement the relation between lift and gain that exists in Nuke’s implementation of the operations, so in this sense it operates more like multiply. I didn’t find the distinction meaningful in this use case, regardless.