I have been experimenting with a different type of HDRI that renders more like an IDL.  This came about when I was searching the internet and came across a download offering that turned out to be a dead-link.  The process involves converting an HDRI into a diffuse or specular convoluted HDR that illuminates the environment with radiance lighting.  Below is your typical background HDR with SASHA-19, and SSS skin textures.  The render is sub-optimal because subsurface scatter interacts very severely with the HDR which is 4k, BTW.