Anyway, Poésie Noire sounds all over the place (don't really know the stuff) so here's some broadly period-correct cold/synthwavy stuff I know of, maybe there's something in there that can scratch the itch.
A Blaze Colour
this is taking forever so
more synthpoppy : Linear Movement / Autumn
more post punk acoustic : The Names, Isolation Ward, Red Zebra
more relaxing : Prothese /...