The Bootlog looks really good. One minor stall for around 2.5 seconds and it still completes within 5 seconds.
The BootVariable of the Entry is Empty line is where the system is delayed. Not sure what it BootVariable is but would think it is something to do with the GUI, given its just after the GUI Ready line. To be honest this is not something to worry about.
There are two ACPI rename patches that I added to the config.plist that can be removed, as they do nothing.
Change PPMC to PRMC and Fix 300-Series RTC Bug. Again very minor and can be left in the config without causing any issues.
You have an Intel WiFi AC 9560 card installed in the system. Do you currently or have any plans to use it in macOS?
It won't work like a native Apple compatible Broadcom WiFi card. But it can be used in macOS with some new kexts and apps. But that is for another day. To be honest it would be easier and better if you replace the Intel card with a compatible Broadcom card, so you have access to all the Apple features including SideCar, Handoff, Continuity and AirDrop.
The kextcache_log looks even better, as it is empty!
The Kernel_log:
This shows an issue with the version of Rehabman's USBInjectAll.kext. Saying it is out of date and failed to load, with errors related to this kext repeating thought the log. So it may be worth updating this to one of Acidanthera's USBInjectAll.kext releases.
There are a couple of ACPI errors after FakeSMC.kext is loaded. These may be removed if we replace FakeSMC.kext with VirtualSMC.kext and the associated drivers etc. There are more errors related to FakeSMC.kext later in the log.
We seem to be entering the PR00 argument a number of times, so a repeated initialisation error is called in the log. We can probably remove this by either removing the SSDT-Plug.aml or the PlugingType=true config entry.
The CLOVER folder is the one from your macOS drive, not the USB so it bears no resemblance to the features shown in the Bootlog.txt.
I have attended to the minor edits explained above in the attached CLOVER 3.zip. I think this Clover folder is ready for general use on your system. Give it a try and lets see what difference it makes to your bootlog when you are booting from your macOS drive.