for Tarvannion, I’ve used with b/x, Shadowdark and ODND. It’s pretty system neutral. Like a dark and gritty LOTR sort of feel. Magic is uncommon in my games in this setting though.
Thank you for the quick reply :) My apologies I took time with mine to do some reading on the materials you mentioned, yes I can see where you're coming from, but you've done an awesome job translating the mood!