I love Index Cucumber Baie! Quarry pointed it out to me, and I am forever grateful. I have a decant of Calypso Mimosa, too.
Cucumber Baie (baie means bay--as in bay laurel, and in this case laurel berries) It's a green, fruity, musk. Pretty unique!
notes: watermelon, grapefruit, cucumber pulp, berry musk--- according to Sephora
Calypso Mimosa by Christiane Celle It's a green, floral musk.
notes: mimosa, green leaves, jasmine, rose, soft musk
I think the heavy undernote that you describe liking in CM is a slightly indolic jasmine note. Nothing jumps to my mind as combining the notes of both scents--but maybe someone else will have some ideas. Hope that helps!