My mom always just mowed whatever grew in the yard and called it "grass" and that's all I have ever done. Mow the weeds, who cares? They get nice flowers, the bees like them. Except bull thistle. We dug that up with prejudice before it could flower. But as far as lawn, that is just a mowed space where I grew up, and I did grow up in a suburb, though not a house farm sort of development, not an HOA situation. And it's just a mowed space where I live now too. Maybe 1 house in every 10 has the literal Grass Lawn, with the chemicals and monoculture. 9/10 have a mix of whatever.