You can tell they appear to be external hemorrhoids, because the hole has nothing poking through and hiding it. Although the last two photos show what external hemroids can typically look like, the first photo shows that the veins are still able to return to their normal state.
It would be more correct to say the second two pictures are of veins that have not fully developed into external hemroids, but they are certainly on their way to doing so. Sentinel Skin Tags and External Hemorrhoids. The photo below is a picture of external hemroids.
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