For me the easiest tell is the up front, unprompted, and unsolicited declaration of nonpoliticalness. When someone takes the time and expends the breath to announce how nonpolitical they are, what follows is almost always a rant about how everything/everyone else is too political these days, and that of course leads into something between status quo advocacy and outright reactionary/regressive sentiments for some fabled time before those wicked politics were visible to the nonpolitical ranter. 
People that are hostile to service workers. Some just want to take some ideological stand against tipping when the service worker doesn't really have a choice and needs those tips to survive in the current unjust system in a way where ideological purity gestures toward that service worker just look like being a greedy and sanctimonious asshole. The worst of such people will actually declare, shamelessly, that they believe that service workers don't deserve a living wage. The implications of that are 
worthy.
I may get shit for this, but I'll say it anyway: this hair and beard combo, seen on living people. 
I have yet to meet anyone in person with that look that wasn't a chud.
(If one of you is a comrade with that look, I am sorry in advance for the prejudice and if I ever meet you in person I will atone by buying you a drink or something.)
i watched that animation of the process of roman road building and it stuck with me. i think i was playing valheim a lot at the time and i wanted to make some intense causeway lol, but i've also taken courses in and helped install a small variety of hardscapes in backyards and small agricultural settings. earthworks and other "built environment" design for supporting human activity is super interesting to me.
i often think about the logistics, materials, and processes of the ancient/pre-modern world. my justification is that the world before the dependency of fossil fuels still has lessons for us, from an engineering and design perspective.
i am not so interested in the philosophy and value system of that era, which i think is the distinction. people who are obsessed with the imagery and pageantry are probably harboring fash tendencies.