Hey!
I made some progress with my 7537 FHD!
I did most of the DSDT edits by hand :-! and looked at the EDID information under windows. Thereby I found out that the LG screen itself has 3 EDID informations. I first tried using Clover to inject EDID information for all 3 by hand without success.
By injecting the EDID information and ID 0xa260006 into SSDT-7 aka SSDT-1 i am now able to boot directly into OSX. It is a bit glitchy (about 20%) as it recognizes my graphics card as a Intel HD5000.
At least a little step further
I´ll try different kg-platform-id´s later, any suggestions?