Welcome. Glad to be of any help.
F is root, G is Home, H (280 MB) is set for boot though i re-installed GRUB to MBR later.
Frankly, I forgot what i had configured because that point in time i did not have much clarity on the installation process. Good that you're doing your homework.
All Mint related partitions are extended partitions partition - May not be an optimal setup. This is what i configure as noob and did not bother to change it.
I would suggest you to read few partitioning guides / tutorials to get a better view of the process and configure it rightly.