Bro, you stated incorrect points about Joselu and Mbappe above; I need to address them all. Firstly, Joselu has never played on the left wing position at Real Madrid; he is a pure striker.
SourceI think it's just typographical error because obviously Joselu plays as a forwarder and some time as right winger precisely. It's some time confusing to differentiate between left winger and right winger unless you imagine it on the pitch.
Secondly, Mbappe mostly played as a central striker at PSG.
SourceYeah, Mbappe played as a central striker while he was at PSG but I think he was more of left winger than a central striker. Between him and Vini I don't know who is going to bench who or probably Madrid will make him their permanent central striker to be switching between Mbappe and Bellingham.
I'm surprised to see Real Madrid want to permanently sign Joselu when he's already 34 years old and Real Madrid already sign Mbappe. I don't see there's a chance Joselu will become starter, he might only play for few minutes or stay in bench for long, waiting either one of Real Madrid's striker injured.
No! They're not in anyway close to each other in terms of the position they play. Despite that both of them play as forward, they play as left winger and right winger respectively. Joselu to be precise play as right winger while Mbappe play on the left wing. If there should be any clash of position, it should be between either Mbappe and Vinicious or between Mbappe and Bellingham.