Egyptian hieroglyps preserve a fantastic case of biblical historicity and of astonishing continuity in names over the Millenia:

One of the Hyksos Kings is called.
𓇋 π“„Ώ π“Ž‘ 𓃀 I.A.K.B which in all likeliness is a rendering of our Jacob!

This is most remarkable and relevant. We also find the name of his followers:
𓇋 π“„Ώ π“Ž‘ 𓃀 𓇋 𓇋 𓁸 π“₯||mourners|Jakobians

The only thing to add is the possibility that the Semitic etymology of this name is flawed, and that the original reading might have been closer to

𓇋 π“„Ώ π“Ž‘ 𓃀 Vi.ar K.b* which could naturally mean anything.

Fortunately we have a prominent vocabulary entry for the first part:
𓇋 π“„Ώ π“…± π“€€ π“ͺ Old Man `i.air.o > Hiero < gero
or 𓇋𓄿 vyear > vielle

So β€˜Jacob’ might have been HieroCoptus, or somthing very different.

A connection to Kadmos of Greek mythology is not supported by anything other than one letter β€˜π“Ž‘β€™, and the fact that the last king of the Hyksos, Khamudi, matches some of the legends and archaeological findings about Kadmos quite nicely.

𓇋 π“„Ώ π“Ž‘ 𓃀 𓇋 𓇋 𓁸 π“₯ Β  mourners Jakobiner! < Copt? Χ™Φ·Χ’Φ²Χ§ΦΉΧ‘ JaΚΏakow = Jisrael ∼ 1800BC ! β€˜Fersenhalter’ 𓃀
𓇋 π“„Ώ π“Ž‘ 𓃀 𓇋 𓇋 𓁸 π“₯ Β  mourners Jakobiner<Isaak<Abraham
𓇋 π“„Ώ π“Ž‘ 𓃀 𓇋 𓇋 𓁸 π“₯ Β  mourners Jakob’s SteinsΓ€ule: π“Š½π“€Χ’Φ·ΦΌΧœΦ°Χ’Φ΅Χ“/π“‰ΌΧžΧ¦Χ€Χ” 𓉻𓏀𓆱 letzter Kontakt mit Gott!
𓇋 π“„Ώ π“Ž‘ 𓃀 𓇋 𓇋 𓁸 π“₯ Β  mourners Jakob’s SΓΆhne = ZwΓΆlf StΓ€mme Israels! Ruben, Simeon, Levi, Juda, Issachar und Sebulon. Josef und Benjamin. Dan und Naftali. Gad und Ascher.
𓇋 π“„Ώ π“Ž‘ 𓃀 𓇋 𓇋 𓁸 π“₯ Β  mourners … Seinen Sohn Josef bevorzugt, Streit um Landrechte, vergewaltigt

The Semitic custom of treating all names with β€˜Ja’ as semitic seems like a cheap trick.
It’s like saying that He=God therefore Heracles must mean β€˜God’ + r-c-l (whatever word you find: God-recalls …). This custom is very unsatisfying (and in most cases likely wrong). Names should not be used to identify the ethnics of Kings.