I've been making soap for about 6 years now, and these are my top 5 favorites:
Coconut
Palm
Olive
Castor
Meadowfoam/Jojoba
I have found these 5 give great results (moisturizing, bubbles, cleansing) when used together and I've made this my go-to base for most of my soaps. I do swap things in...
Coconut, Palm, Olive, Tamanu, Almond, Avocado, Castor, Cocoa Butter, Rose hip and Moringa Seed. I also infused the Olive oil with some calendula and rose petals before I started the main batch.
Excessive? Yeah, probably. But it sure was fun! :)