I prefer [name_f]Michaela[/name_f] because it’s the most traditional and looks less trendy.
Here are the spellings from 2015 births in the US:
[name_f]Makayla[/name_f] (2237), [name_f]Mikayla[/name_f] (941), [name_f]Michaela[/name_f] (639), [name_f]Mikaela[/name_f] (481), [name_f]Mckayla[/name_f] (259), [name_f]Micaela[/name_f] (222), Makaylah (99), [name_f]Makaila[/name_f] (86), [name_f]Makaela[/name_f] (52), [name_f]Micayla[/name_f] (45), Mykayla (42), [name_f]Mikaila[/name_f] (38), [name_f]Mackayla[/name_f] (34), Mikaella (33), [name_f]Macayla[/name_f] (32), Mikaylah (31), [name_f]Michaella[/name_f] (28), Michela (23), Mickayla (22), [name_f]Mikala[/name_f] (22), Mekayla (21), [name_f]Michayla[/name_f] (21), Mikeyla (20), Mykaela (16), Mikhaela (15), Micaella (15), Makeyla (15), [name_f]Makala[/name_f] (13), Mikela (13), Mikella (12), Mckaela (11), Mykala (11), Makeila (9), Mckaylah (9), [name_f]Micheala[/name_f] (8), Makailah (7), Mickaela (7), Michaelah (7), Mikeila (7), Mkayla (7), [name_f]Makalah[/name_f] (6), [name_f]Michala[/name_f] (6), Mikeala (6), Makaelah (5), [name_f]Michella[/name_f] (5), Mykaila (5), [name_f]Mikhayla[/name_f] (5), [name_f]Mikhaila[/name_f] (5), Mahkayla (5)