Caesar really didn't have any children who lived long--only Ptolemy Caesar (Caesarion) by Cleopatra--that's why he named his great nephew Octavian as heir. And Caesarion was killed not long after his mother died. No children have been mentioned.
I don't know that Nero or Alex the Great had any children for you to be descended from.
David & Judah are questionable too, for the simple reason you cannot firmly prove that you are descended from them beyond hearsay. Spiritually, yes; physically, no.
I'm not sure about Muhammed's children--he had enough wives, but I've not read much about him to know about children.
Jesus--really, really, really doubtful
While Napoleon had at least 1 child, again, I'm not sure if you could be desecended from him. Related, yes; there are Bonapartes in the US descended from his siblings.
Now, medieval genealogies "proved" that various kings were descended from Adam (which would cover David & Judah, and maybe Caesar & Alexander), but most of that was pure nonsense, meant to bolster a monarch's place. Old Scandinavian lines of descent were traced to Odin for the same reason. I can't see any Christian medieval herald tracing ancestry through Mohammed--that would have been heresy & a terrible blot in their eyes. Recently, people have tried to show that the Merovingian kings of early France (Clovis, et al) were connected in some way to Mary Magdalene & Jesus, but I don't know how old that theory is.
You could be related to any of the rest, but it is uncertifiable (meaning no birth certificates or anything beyond hearsay).
Hope I didn't burst your bubble too hard.