Just listened to Steinvord's eponymous album for like the sixth time in a single sitting.
It definitely is Tom Jenkinson. I can hear him all over it. Most obviously is the usage of the prominent sample from "Tundra" on "Ontrackv2"
See for yourself:
vs.
The acid bits? Could be anybody at this point. To me it's not distinct enough. Could just as well be Vibert or Cephax, tbh. I don't hear anything particularly characteristic of RDJ in this.
Could be though.