Just followed the Catalina Mini Guide, now have a hackintosh running perfectly on its first try (commissioned Built for a fellow photographer/videographer)
have a few things to refine, like static coming up on my screen during a restart and a few static screen boots if i'm trying to access BIOS, my only other issue is inability to use the 630 IGPU from motherboard HDMI, but im sure that can be resolved / its not needed with my parts
but apart from that, sound and everything is perfect
Here is the list of parts working without any extra steps needed
Gigabyte Designare Z390
Refine R6 USB C case
I9 9900ks
64GB 3200mhz Corsair ram (4x16)
Shappire Pulse RX 5700 XT 8GB
Evo Plus 1tb m.2 (i did a firmware update via this built in windows pre installing OSX)
WD 4tb Black
Wifi card by WIFIOSX is coming in the mail this week, so will test everything else then but the 2 LAN ports work fine