https://longbowgames.com/hegemony3/
It's also just a generally fun strategy game that went largely unnoticed and they're still plucking away on DLC years later.
Hearts of Iron - HOI(4,3) is more of a modern warfare game: you manage supply, manpower, combat lines.
Crusader Kings - CK(3,2) is more of a roleplaying game: you manage your family, dynasty, vassals, religion, personal traits, and personal/family scheming.
Europa Universalis - EU(4,3) is a game that combines a bit of everything: you've got internal affairs, foreign affairs, bit of warfare, technology, colonization, discovery, market trading, ...
Stellaris is like EU but in space. With scifi tech, federation, diplomacy and mythical/intriguing events
Victoria is more of an economy management game along with a bit of warfare and political fun.
They're all good games that can take a few couple of hours to have fun with. People usually joke that it's like playing with a map and some coloured paintbrush ...
Paradox has some other nice titles too. I think "Tyranny" and "Pillars of Eternity" is Paradox too but might be wrong. Those are RPGs (think Neverwinter Nights, Baldur's Gate, Icewind Dale, ... kind of RPGs)
Other Paradox games mostly just have generic "available manpower" number and unit attrition that eats into it, depending on terrain, weather, etc. They do not concern themselves much about how that manpower actually gets to the unit (which could be on the other side of the planet) to replenish it.