[2023] Suggestion of obscure RTS

Hi all, I've been returning to the RTS videogames world after a long hiatus. I am mainly interested in playing WarCraft/StarCraft clones from the start of the century, so I am looking for suggestions:
- the game should be fantasy/sci-fi oriented;
- best with at least 3 different factions, asimmetry is good;
- with good campaigns (really important).
I know almost all the "classic" RTS of the era (CaC, AoE, AoM, Stronghold, and a lot of lesser known like Armies of Exigo, Submarine Titans, Rising Kingdoms ecc... even Golem, a Polish Warcraft 2 clone!) so I am expecially looking for games that you may think you are the only one to know!
Many thanks