A couple of weeks ago I planted some seeds of different fruits that I ate. Some didn't make it and some did, however, I lost track on this one and don't remember what this plant is.
Here are some pictures.
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I know it's not one of the ones you listed, but I really don't think it's any of those, to be quite honest. It looks just like an indoor pepper to me (Capsicum annuum), and probably a sweet bell pepper, at that. The leaves are kind of curling, though. I grew peppers this last fall/winter/spring that looked like that (sans the downward curling). They're outside, now.
Here are some pictures that look pretty close (these aren't mine, though; note that they're both of indoor peppers, and not outdoor ones):