There are many maps circulating on the Net about Steppe migrations. But most of them are obsolete with errors. With wrong dates, that are confusing.
I present a map which is based on the latest ancient DNA data. It was published in Naramsimhan 2019 paper. This was a very large paper dedicated to Aryan origins with hundreds of samples.
Not only migrations are good with correct dates, but also You can see the impact of Steppe ancestry.
There are no migration lines toward Balkanes and Near East because the sample sizes from this regions are not yet sufficient to have a detailed picture.
Nevertheless in the same paper (in supplements) the authors analysed a sample from NW Iran BA (2300bc) and they have found that it had 50% of Steppe ancestry. They assume that it was a result of migration, obviously not via Central Asia.