Huwawei aeem to have done it. It might not be exactly the same but it’s near enough. If huwawei were able to do it then I’m sure others could.The original question was whether or not Apple designed and engineer the screen, not if Samsung is the leader in the industry. That's a different question. So I think we're in agreement that Apple designed the screen.
Seeing how ROGMaster liked your post, he now seems to agree with me which is odd since he was saying Apple didn't engineer or design the screen. I have him on ignore so I won't see his responses, but regardless, this debate is settled.
Look at the leaked S10 pictures. There's still a chin, but they removed the top. I don't think they're going for uniformity
I don't think they can replicate Face ID easily. Apple bought PrimeSense (creator of Xbox's Kinect) and spent 4 years of research and development to shrink the Kinect hardware (something that's a little bit bigger than a nintendo switch) into a small module on a portable device that can securely unlock the phone using your face.
I'm sure Samsung is researching this, but this isn't something they can do in one year. Regardless, this is getting off topic now.
As for the notch it’s necessary on the iPhone to house all the sensors. I would say the tear drop is the best as it’s the least intrusive but that doesn’t really paint the entire picture because the tear drop notch is only housing one selfie camera. I don’t think you can make a fair comparison even with the S9 or upcoming S10 because again there are only selfie cameras. I suppose the worst has to be the one on the pixel 3 XL.