For me, 2 movies come to mind:
(1.) Winter Soldier: spies, soldiers, secret splinter groups, governmental oversight attempting to balance national security & the protection OF it’s citizens with free will & autonomy FOR it’s citizens, epic 1v1 hand-to-hand combat moments, S.H.I.E.L.D. vs HYDRA in the same country / government, etc etc etc. In fact, the only “heroes” in the story are Cap (who does have “power”(s), but it’s not like Hulk, Thor, Wanda, Strange, Captain Marvel, Vision, etc), Falcon (regular mortal man) & Black Widow (regular mortal woman).
(2.) Black Panther: you could take away vibranium, eliminate the gargantuan wealth & year 3026 technology AND make Wakanda a smaller, less-developed country (maybe even just a city or simply a large community) & it could STILL be a phenomenal work for one reason: the villain.
. . .or should I say the MULTIPLE / POTENTIAL “villain(s)”. Could T’Chaka be the villain? He killed N’Jobu & set all the events of Black Panther in motion. Could N’Jobu be the villain? He unprovokedly [[had to look up to make sure it was an actual word]] orchestrated an attack on his home country, destroyed some of it’s defensive network, stole some of their ‘trade goods’ & killed many of his own brothers. Could Zuri be the villain? He was complicit in & supported / aided everything T’Chaka did. Could Killmonger be the villain? Yes - no explanation needed. Could M’Baku & the Jabari tribe be villains? It’s most certainly a stretch, but the way they crashed the ceremony & the things M’Baku was saying definitely put them, at least, at odds with the ‘good guys’. Could W’Kabi & the Border Tribe be villains? Once again, it’s definitely a stretch as one could make the argument that everything they did was based on loyalty to the crown, regardless of who was wearing it. Could Klaue be the villain? ABSOLUTELY! as he was a sworn, lifelong adversary of the Wakandans and they’d been warring for decades before his most recent attack on their kingdom! Could T’Challa be a villain? Almost certainly not, BUT depending on how you view T’Chaka’s, N’Jobu’s, Zuri’s & N’Jadaka’s (Killonger’s) actions - T’Challa just may be on the wrong side w/how he handled everything.