Here, I'll read off hits for "regulated" in COCA (Corpus of Colloquial American [English], https://www.english-corpora.org/coca/ ). There are more than 7000; I'll just take them top down until I lose energy.

> German business owners are more than eager to escape their high-wage heavily regulated union environment

> It is also regulated and controlled by a supranational regulatory body (the WTO)

> and Finland where cell phones, cable TV, other services and products are better regulated and at far lower costs

> "yet they still aren't regulated as hazardous waste. If we really want 'clean coal', we need

> Making the mark-up as opaque as possible. When you are forced or regulated into revealing the mark-up

> fees that get taxed in NY and (hello?) regulated under NY and US laws.

> an aspect of human behavior that is regulated by society through the operation of justice

> aspects of human behavior that are totally regulated by society

> but one of the largest sources, at cook, will be regulated by a [traffic] light

> Greenstein said the exchanges as envisioned in the federal law are too regulated, likely raising costs and limiting choice.

> The fact is, "fair markets" (free markets are not fair, and fair markets are not free) must be carefully and dutifully regulated. And over most of the US's past, it had extensive and good regulation.

> You look at the financial industry as the least regulated. I disagree. The problem is that money is the most regulated of all things. We have legal tender laws and taxation

> what we call "free markets" are actually highly protectionist, regimented, regulated, and designed to undermine competition

> Natural gas supplies were regulated almost out of existence until the government

> But, owning personal arms IS being regulated and pretty much has been from the inception of the Second Amendment

> contraception was also illegal in Ireland until 1980 (!) and then were strongly regulated (yes, your doctor had to prescribe you a condom)

...

> Marijuana should be regulated and taxed by the states

> City Council outlawed corporate signage on downtown buildings. We REGULATED, in other words

OK, I'm losing energy. One page of results has 101 entries. I'll code the first page:

Referring to government (or supragovernmental [the WTO] or divine) law: 80

Referring to mechanical control: 11 ("needs a regulated voltage to run")

Referring to some other type of control: 4 ("Sex [is] an aspect of human behavior that is regulated by society")

Referring to a formal rule that is not imposed by any body with enforcement authority [e.g. an agreement on date nights between a husband and wife]: 2

Typo: 1 ("what legislation is necessary to regulated GMOS")

Unclear: 2

That last category, "unclear", does contain an example that might be construed as meaning "orderly":

> I do not subscribe to the notion that we must regulate our population because there are too many people on Earth. Let Nature take its course and allow the population to get regulated through the market forces in a free association of human beings in society.

The source blog is gone, so I'm not able to look into it in more detail than that. This might be an example of using "regulated" to mean "orderly", but that looks extremely unlikely; it's more likely that it refers to the general existence of rules, in this case a code of conduct. (Which would place it in the "other type of control" category.)

It is in fact fair to say that the usage of "regulated" seen in the second amendment has entirely disappeared from modern usage, and that's why people don't understand it and are willing to deny that using the word that way was even a possibility. It is not a possibility now, but it was then.