Before Adobe bought them, Kyle Webster made the "Kyle's Megapack" which is now included free with an Adobe Photoshop subscription. These brushes (especially "Kyle's Ultimate Charcoal" and "Oil Paints") behave almost identically to Marc Brunet's advanced blender.
Do not import 100 brushes at once. Import the main set, then delete the ones you don't use. Marc's advanced set usually has a "Favorites" folder—stick to that for the first week. marc brunet advanced brushes free link
The pack would include a simple popup panel or README with a "Quick-Switch" guide: Before Adobe bought them, Kyle Webster made the