Learn English – grammatical rule impeding the presence of ‘for’ in “I have lived here ‘for’ all the life”

I think the "parallelism" here is potentially misleading. Modern English doesn't normally start a sentence with an adverb in this way. We still use A1, A2, B2 in a limited number of constructions, but the grammar involved is no longer "productive".

As regards sentences starting with "Hardly", I would say these are always dated/formal/literary. Thus, for example, "Hardly had I begun" would normally be phrased today as "I had hardly begun".

We still "tolerate" the form here comes X, but it's no accident that OP chose to switch the verb from arrive to come. Modern grammar doesn't allow constructions like "here arrives the bus", except for certain established usages involving certain verbs (there goes the neighborhood is another one). Here's a chart showing how the form Here stand I, for example, has declined over the past couple of centuries, and here's one for Here stands a man showing that it's the same with both nouns and pronouns.

It seems to me here X comes is an even more "fossilised" form than here comes X. But it's been "modernised" by allowing X to be a pronoun, and we've gotten so used to that form we don't like to put the pronoun at the end any more.

Notice that for the vast majority of verbs which can be modified by here, there, etc., you simply can't put the adverb at the front. You have to adopt the modern style and place it after the verb...

"See that building? I worked there". (grew up, lived, studied, etc.).

I think your instinct is correct.

To begin with, you can't say many others and I because other has to have an antecedent to distinguish itself from. You leave the hearer wondering "many other than who?"

But both many people and I and I and many people sound almost as odd. I suggest—and this is nothing more than a guess—that this is because employing a conjunction implies that many people and I are two different sorts of entity: you are distinguished from many people and consequently must be something other than a person. I and many others avoids this implication; but If you want to put the many in first place you're going to have to say something like as many people, including me, have said.