Following are the boolean variables through which you can enable/disable RT features by adding the following code in the INI file:
You will need to create the INI file in \Cyberpunk 2077\engine\config\platform\pc\

[RayTracing]
EnableAmbientOcclusion = true
EnableDiffuseIllumination = true
EnableDirectionalShadow = true
EnableDirectionalShadowCulling = true
EnableShadowCasadesOptimization = false

EnableGlobalIllumination = false
EnableImportanceSampling = true
EnableLocalLights = true
LocalLightTraceLightVolumes = true

EnableMirrorMaterialReflection = false (don't touch this! your mirrors will come out black!)
EnableTransparentReflection = true
EnableReflection = true

EnableNRD = true (Nvidia Realtime Denoiser, disabling it RT comes out black)

DynamicInstanceUpdateUseHalfFloat = false (for enabling 16bit precision)

HideFPPAvatar = true

EnableResidencyManagement = false
EnableSkinning = true
EnableSpatialFiltering = true

You can find more attributes in the following mod: INI settings and EXE parameters list at Cyberpunk 2077