All of us, including "me" or "I"

Which is better in this case, "me" or "I"?

All of us, including me, have made mistakes.

All of us, including I, have made mistakes.

It seems that "I have made mistakes" makes more sense than "me have made mistakes." But on other hand, "including me" makes more sense than "including I."

While typing this out I thought of a better way to phrase it so that it doesn't sound odd, but I would still like to know which is correct:

All of us have made mistakes, including me.

Solution 1:

All of us, including me, have made mistakes.

It is not have that determines the case of the first person pronoun here but including, which always takes me. Not to compare with 'I have made mistakes'; but ask 'including whom?' --> Objective case.

However, with I, we could say,

All of us, I included, have made mistakes.

With myself, as with me,

All of us, including myself, have made mistakes.

Solution 2:

Since "including" is a preposition, it must take an object (unless it works as a particle in a phrasal verb, something not the case here). "I" is in the nominative case whereas "me" is in the objective case. Thus, "including me" is correct. "Including I" is incorrect in the same way that "for you and I" is incorrect: "for" must take a pronoun in the objective case despite the compound object. Most of us know enough not to say "for I" but the compounding of pronouns sometimes leads to confusion. What is important is the pronoun case not the verb.

"We have all made mistakes, including you and I." is incorrect usage because the subject of the verb "have" is "we" not "you and I," which are the compound object of the preposition "including."

Solution 3:

"All of us, including me, have made mistakes" is correct for the reasons given by Kris.

However: "All of us, I included, have made mistakes" is an error, the position of the pronoun is inversion for emphasis, but it remains the object of "included". The group included me. To use "I" would need the passive voice: "I am included".

"All of us, including myself, have made mistakes." is also technically an error. "Myself" is principally used as reflexive: e.g. "I hit myself".

"Including myself" might qualify through common usage. "I included" surely doesn't.