Post a screen capture of the actual Notification menubar in question. Posting something that's similar isn't all that helpful as it's too vague and misleading. Icons are designed and created, essentially works of art so the possibilities are endless. And basically, it will be a matter of luck if someone can identify it. Commonly used apps won't be a problem but there countless numbers of apps out there so it could also all depend on if someone else also has that same app on their phone and recognizes it. The thing is, we all set up our phones differently and rely upon a lot of apps that others don't even care about so what you're asking could be hit but more likely a miss.