I tend to not really have favorites for anything in general. I will call out Vlaada Chvatil though as maybe my favorite board game designer? He’s got such a wide range of games and they are all great. Tons of respect for his work
I can sometimes get into and really love a heavy game like Twilight Imperium (Eclipse is good too). Through the Ages is another one of my top heavier games. I love the economic engine aspect and building up my civ. Lighter games will hit the table more and can end up being a favorite more consistent option. I always bring Love Letter with me to board game sessions, because it’s such a good game and so easy to fit into your game night. I’ll play anything with worker placement or deck building mechanics. Some of my other favorites in no particular order - RftG, Puerto Rico, Power Grid, Factory Manager, Terra Mystica, Suburbia, Agricola, Space Alert, Everdell