Ch4 might be religious
As Ch3 is Saturday (Ch2 is Friday)
And since sunday is a day of worship
Ch4 might be based on whatever religion is practiced there

therefore, chapter 4 is federalist as the first amendment states that all religions can be practiced in the nation

Probably

chapter 5 is likely based on the festival, and festival games are rigged, just like dictatorial state elections

Uh
Yeah

Chapter 3 is based on housing and entertainment (television) which could represent how communism falsely promises freedom and a more stable and unbiased market, like free housing, though in reality even things like entertainment can be banned in the often dictatorial state of marxism and maoism

Uhh uhm also Saturday morning cartoons!! Eheheh.. heh..

Chapter 7 is often theorized to be the bunker, which could represent a closed off area that is incredibly difficult to get into (Military regime) and since Deltarune has an arching motif of freedom and chapter 7 is the pinnacle of the game, it may represent how military regimes are hollow attempts at freedom

...