Hi there, I think I've found the "Stencil Sponge - Wet" brush you mentioned. It's from the Faux Finish brushset from the default library. Do you know about the settings on your brush (the wet 6 brush), if you do, would you share it? Ok, I think I'll stop asking about the same brush 'cause it will be annoyng after a while, hope it doesn't bother ya. Have a nice day and keep drawing, your work is pretty nice <3!!
i took screenshots of the presets for you ill put them here in a readmore :o hope they help (also thank you!!)