Hi, for companions as Krem, I have Krem as Blackwall in this mod: https://www.nexusmod...ition/mods/2643
as for Inquisitor as Companions/Advisors it is like dmitrias said, past Inquisitors are not possible at the moment sadly.
Edit: But I have attempted past Inquisitors as Companions/Advisors but it only takes data from Current Inquisitor. For example I tried putting my Dwarf Fili's head on Varric for a test since I already had his preset data made, but it gave Varric instead my HF Inquisitors head instead. Floating head in spoiler picture below to show you what I mean.
So having a Twin for your Inquisitor would work but so far not past Inquisitors.
Edited by Padme4000, 01 October 2020 - 12:38 PM.