In this question, the OP asks what the different types of flashbacks are, which of them is used the most and which is the most effective. He doesn't really get an answer to the secondary questions, which is what I'm looking for here.
But instead of asking which is the most effective, since that can be more opinion-based, I'm rather asking what kind of effect the respective alternatives produce. Also, I too wonder which is used the most.
Here are the different types of flashbacks mentioned in the answer to the post:
Third-person omniscient information dump
A true psychedelic-style flashback (usually in first person)
Third-person limited thinking about one's past
If you know of anymore, please add, the more the merrier.
Now, I'd like to know the implications of all these types of flashbacks.
Which one is the most compelling to read (if there is an objective answer to this)?
Which one is the most informative?
Which one stays best in touch with what kind of narrative?
Does any of them take the reader out of the action?
To begin with I was planning to have my flashback be number 2, a third-person omniscient info dump, as it is the easiest. But I have this feeling that it is not a good narrative move, as if it takes the reader out of the action, and that it suffers from "telling instead of showing".
Is this option not in-line with "show don't tell"?
Also, in case that it is relevant, here is what kind of narrative my story is; Third-person with many POVs.