It's all speculative of course since you can't trust legends or that any NPE hasn't happened etc.I am not sure where you got the sources so can't comment much.
But how does this Mazaraki being T make Kastrioti T?
Also, any deeper read for the Palailogos? J2a or J2b?
As I said it's all hypothetical but presence of J-M319 in Albanians would be irrelevant about Palaiologos either way.About T ,if we were to use the same logic of popularity we'd never guess Napoleon and Hitler had E1b clades , Thomas Jefferson T , Kolokotronis I1 etcBoth J-M319 and T in general are rare in Albanians so seems unlikely, that recent Greek must only be related from mother's side, father's side ydna is wrong. However in terms of origin this isn't the first time I have seen that the Kastrioti lineage goes back to Epirus. Gjergj Kastrioti who had completely lost his identity after being kidnapped returned with the title King of Epirus while only Price of Emathia, it seems his fellow Albanians reminded him of his lineage
Saw the Maciamo one but since there was no source I searched and came across that post so I'm not sure about it's validity either.I saw Maciamo claim V13 for Kastrioti based on someone contacting him on social media. I do find this weak, but then again I do not know who contacted him... I think the definitive answer will come by analyzing close descendants of Kastriotis bones. Everything else leaves room for stuff like multiple clades apearing, non paternity events and many other funky scenarios. I am sure that in Piana degli Albanesi in the old chappels there ought to be close descendants burried. The question is if there is enough will and initiative to test.
It's all speculative of course since you can't trust legends or that any NPE hasn't happened etc.
The Troupakis Y-DNA is on the FTDNA Greek project page I posted.
Οικογένεια Τρουπάκη - Βικιπαίδεια
el.wikipedia.org
It's J2a (J-M319)
The Kastrioti is based on the theory that it's a branch of Mazreku-Mazaraki-Mazarech-Masarachi
Mazreku (Epirus) - Wikipedia
en.wikipedia.orgKonstantin Kastrioti (died 1390) - Wikipedia
en.wikipedia.orgΗ οικογένεια Μαζαράκη και οι Μπαλτσαβιάδες - KEFALONITIS - Το online περιοδικό για την Κεφαλονιά
Το dilinata.gr παρουσιάζει την ιστορική καταβολή της οικογένειας Μαζαράκη όπως παρουσιάζεται από το «βιογραφικό λεξικό Κεφαλονιά Ιθάκη» καθώς και την γέννηση του επιθέτου Μπαλτσαβιά. Αναλυτικότερα τα στοιχεία έχουν παρθεί από την ιστοσελίδα mazarakifamily.blogspot.gr όπου αναφέρει...kefalonitis.com
The Y-DNA is from the relatives file of a person with roots in Ionian islands.
As I said it's all hypothetical but presence of J-M319 in Albanians would be irrelevant about Palaiologos either way.About T ,if we were to use the same logic of popularity we'd never guess Napoleon and Hitler had E1b clades , Thomas Jefferson T , Kolokotronis I1 etc
The family's origin is patrilineal ,the question is if the connection with Kastrioti is true and/or if that family has multiple different clades who just share the name.