Croatian YDNA

[Jana]

To me Croats don't really look like us (Russians/East Slavs), you guys are more 'Western' so to speak. But also more Southern European.

I agree. From eastern Slavs only western Ukrainians are quite smilar to northern Croats. Western Slavs are closer, Slovaks especially.

[Peterski]

We have bit of baltic type R1a too

How could it get there? Maybe assimilated by Early Slavs and expanded with them?

Or did it get there with someone else? Balts assimilated by East Germanic tribes?

[Jana]

How could it get there? Maybe assimilated by Early Slavs and expanded with them?

Or did it get there with someone else? Balts assimilated by East Germanic tribes?

Yes, I think early balto-slavic heritage probably (R1a Z92). it isn't uncommon among south slavs, Serbs have it too.
maybe Goths too, who knows

But most of our slavic lineages pinpoint to Carpathian mountain area (I2 dinaric and R1a Carpatho-Dalmatian) which really speak in favor of White Croat migration from southeastern Poland/Western Ukraine.