Modern Conservatives are so scattered and unfocused I’m fairly confident any cross section of them would be more than likely to cover the three points you touched upon.
Conservative is a watered down label these days, anyone who is willing to vote for an (R) is dragged under the tent flaps and hailed as a brother.
So, yes, I’m fairly certain modern (large C) Conservatives would have more in common with the Spartans than you think. (small c) conservatives are a dying breed, it’s being rejected by the right and demonized by the left and most people are more than willing to retreat rather than face rejection by society.