The block is large and well-documented enough to call it Illyrians. If those samples were no actual Illyrians, who was? They had the same artefacts, the same burial rite, even close contacts between the regions from Slovenia to Montenegro-Albania.
a) Southern Albania was not Illyrian for the most time
b) Even Albania as such being an area which was "Illyrianised", conquered and settled by Illyrians coming from the relative North west.
Look at this map, for example:
[IMG]https://miro.medium.com/max/1400/1*SwPgJW6QeLSssbyovfqfIg.jpeg[/IMG]
We now have samples from most regions covered on this map and they all yielded J-L283. That's clearly what's connecting the Illyrian sphere, while other lineages are more regional and probably acquired from other people. The whole Eastern sphere on this map was initially settled by cremating groups related to Channelled Ware/G�va in the wider sense, before there was Illyrian adstrates and replacement events.
Take for example these three groups, thorugh which Channelled Ware marched South in the LBA, all three are clearly non-Illyrian:
https://www.austriaca.at/0xc1aa5576%200x002debf3.pdf
The Illyrians very clearly came, in any case, from the West of that zone and encountered new people when coming down.