I don't know how controversial this is but it's a viewpoint I've seen floated about numerous times in the past, the idea that Clark is a regular guy.
There's three problems with this line of thought:
1. Regular is relative.
Calling Clark a regular guy is fairly vague identification in the first place. There are simply too many constantly changing variables that go into human development from the time of birth and all throughout life. The Earth is filled with differing cultures and subcultures and those subcultures further fall into their own denominations. Too many countries and too many schools of thought to relegate character to "regular guy". A characters behavior should be at the minimum the summation of their life's experiences with a reservation for the element of chaos that creates differences in people with similar backgrounds/personalities leading to different decisions/feelings in similar situations. Calling him a regular guys is essentially hand waving the question of, "What is Superman's personality like". It only leads to people feeling he's bland.
2. The things that make him regular are mostly optional or metaphorical.
Superman is an immigrant story and most wouldn't argue that it's a concept that sits at the heart of the franchise even if they would argue exactly what kind of immigrant he should be. To a degree I've seen people in real life reference the Superman story and relate it back to their own immigrants stories, however Superman is from a fictional location and exist under nonsensical circumstances and creates a dissonance because of it. Now often when trying to support the Clark is a regular guy angle people often jump to bringing up Batman as a reference point of someone who isn't "normal" and I think often this is where the starkest differences between the characters pop up but not necessarily in the way the Superman core would hope. The circumstances the first laid the seeds of Batman are unfettered, he is a product of regular violent crime, from a regular joe, in a regular street alley way after watching a movie. You can turn on your tv, computer, ipad, whatever and probably hear about some kind of double homicide or robbery. His turn to Batman is a bi-product of hardwork and determination all things considered the corner stone of success stories.
Generally the next angle is to point to their class status as a point in the favor that Clark is a normal guy because he's works a "regular" 9-5 job and Bruce is CEO that lives in high rises and mansions. Again this is hampered by the fact that Clark has numerous advantages over %99 of the world and he could easily be a CEO if he wanted. Common thought in America is to shoot for the star and by not doing so Clark is actually deviating from the norm by comparison Bruce being an heiress isn't really that odd and has greater significance in his life because of how it ties back into his life as Batman.
Then you have the belief that Clark's more upbeat personality makes him more normal over Bruce's more dower one but seeing as happy and sad are both very real and very present on the human emotional spectrum this entire line of thought makes little sense and kind of shows how little thought goes into the Clark is a normal guy angle.
3. He has a status within the superhero genre and within DC universe that sets him apart.
He's pretty much the sole remaining proto Superhero and is often referred to as the granddaddy of Superheroes. That's something you can't escape no matter what you do.
Also the idea that DCEU Superman is a pyschopath or emotionally dead makes no sense from viewing the movies. If anything his problem is he's too sensitive and easily discouraged.