We really need some richer vocabulary for this. Ingroups in the senses of "groups you have positive feelings towards", "groups you consciously consider yourself part of", and "groups you subconsciously affiliate with, e.g. those for which, if their values are attacked, you feel offended" all seem to be psychologically distinct (if correlated), but often get conflated with each other, producing a lot of unproductive semantic argument.
If we were to go nuts on this, we'd probably need at least two continuous variables here, one to signify to what degree do you accept and support the group's values and goals, and one to determine how much are you actually involved with this particular group.
In practice, I tend to think in the following categories (for positive attitudes):
Sometimes our minds suddenly "click" and we see a topic in a new light. Or sometimes we think we understand an idea, think it's stupid and ignore attempts to explain it ("yeah, I already know that"), until we suddenly realize that our understanding was wrong.
This kind of insight is supposedly hard to transmit, but it might be worth a try!
So, what kind of important and valuable insights do you wish you had earlier? Could you try to explain briefly what led to the insight, in a way that might help others get it?