Sorry if it was already asked in another thread, but Kindred says it trumps all stealth abilities, while Undetectable says it blocks all aura reading perks, so I don't know which one counter which.
it doesn't, the aura of the killer will not be revealed.
Kindred's "trumps any of the Killer's stealth abilities" line of text was written before they released Myers, who is not affected by Kindred while in Level 1 Evil Within. That line should probably be updated/removed to avoid confusion.
Yeah, that line is probably more directed at the Wraith's cloak.
And even that's not up to date, when Wraith will get Undetectable in the Mid Chapter Patch.