I dislike
Isabelle,
Isabel is only slightly better, but
Isobel is rather nice. Still not my favorite, but it's kind of pretty.
Ysabel is my favorite spelling, and I'm warming to
Ishbel.
Isobel Mabel...I love
Mabel, but the endings are too similar for me, and I dislike how the L's get lost in each other in
Isobel Lucy. Maybe
Isobel Margery?