PartitionDxe-64 in Clover's Drivers64UEFI and kexts explanation?

I'm trying to make a vanilla install without the help of UniBeast and MultiBeast and I need to know what each and every kext and Clover setting does.

I know the FakeSMC kext is essential and IntelMausiEthernet is for the Intel LAN to work but what about USBInjectAll and NullCPUPowerManagement? What do they do?

Also, when installing Clover I know I should check "Install for UEFI booting only" and "Install Clover in the ESP". But what about the Drivers64UEFI? I've seen OsxAptioFix2Drv-64 is always recommended but only some recommend PartitionDxe-64? What does that one do and what other should I check?

My setup is:

i5-7500

Intel HD 630 Graphics

H110 motherboard

Intel Gigabit LAN

ALC283 audio

BCM94352Z M.2/NGFF WiFi+Bluetooth