For the 4 combos listed, make the following changes (in any order):
1) Keep the first name, change the middle name (gender change is fine if you consider the first name is/should be unisex)
2) Change the first name, keep the middle name (gender change is fine if you consider the middle name is/should be unisex)
3) Swap the names around
4) Keep the initials (gender change is fine)
Jemimah Nadine
Nathanael Tobias
Logan Elspeth
Alisdair Claude