Hibernation doesn't work well in Hackintosh.
Backlight should work, that kext has been integrated into Whatevergreen a long time ago.
I wouldn't upgrade Clover beyond 5119 as you have now. It'll run Catalina just find, unless you plan to install Big Sur, then I suggest go with OC.
Newer version of Clover breaks all sorts of thing or won't boot at all, maybe 5126 or newer but I have not use beyond 5119.
As for new Lilu.kext, you can place it in the Off folder then you can test it during boot. At clover, press the spacebar to select block or unblock kexts. There you would block Lilu from Other and allow Lilu from Off and see if it'll boot.