If you presume they have already looked at the list, use "found". If you would like them to review the list, but they haven't done so, use "find". So, since you are putting the sentence below the list, "found" makes sense. But if you were to put that sentence ABOVE the list, you would need to use "find".

Would have find or found?

Both are grammatical and acceptable. In short, the present perfect (have found) is more likely to be used when the speaker has no end time boundary in mind related to the context in which the past event (originally finding it) remains operative, carries consequences, or is of importance.

Will find or will found?

You usually find something by your own action. We use find + [something] and find + [someone]. The usual grammar is find + noun. Remember, find is an irregular verb, so we say find, found, found.