At first: The horseman tribe-alliances from the steppe never came from a single root. The whole alliance was wearing the name of the core tribe or clan. The leading layer of the joined and defeated peoples identified themselves with the core. After the hun core crossed the Volga and defeat the alans, the alans riding with the huns against the eastern germans. Not only ostrogoths, there were the rugians, heruls, skirii, gepids, quadii too. After defeating Ermanarik, these peoples became the most loyal allies of the huns. Most than half of the huns army were germanic. They called Attila the last great Hun leader. It is a german name, not a hun. In the Era of the Hunnic Empire, the leaders of the vassal tribes called themselves huns. So among the hun elite, were so many eastern germanic and eastern european Y haplogroup.
Avars. Original form in Byzantian annales: Uarchonites. (Old hungarian name of the avars: varkun or várkony) It was a mixed nation from the beginning. Uars from Inner Asia and Chons (huns, heftalites?) from Central Asia. In the Avar Khaganate, if a slavic or gepid, or a bolgarian turkish chief got a belt, he became avar. He and his offspring. They dressed and buried like the avars.
Magyars. It was originally just only one tribe's name from the conquering seven(or ten). These tribes had a blood contract with each other, before the campaign. Why? To become brothers. Why? Because they were not related to each other. They were completely different roots. There were also Finnugrian, Central-Asian and eastern-european bloodlines among them. Like today. There are certainly many later slavic, germanic and romanian elements merged with the hungarians, but the core remaining the IX. century population descendants. If not, how can be exist in today a non indo-european language as an island in the middle of the indo-european ocean? So I'm sure, among the conquering magyars were hun fragments, and germans (remaining fragments from the steppe and varangians from Scandinavia), and eastern slavs and God knows what else.
My results. I have identified the Y haplogroup of 15 families. 11 my own ancestors and 4 my wife ancestors. They all came from the northeastern part of old Hungary. (Szabolcs, Szatmár, Zemplén, Sáros, Szepes and Gömör county) Today: Szabolcs-Szatmar county in Hungary, Satu Mare county in Romania, Presov and Kosice region in Eastern Slovakia. The turkish armies has never been to this area, and the mongolian destruction was not as large as in the middle of the country (Alföld). So the results:
1.) E1b1b-V13-CTS9320-A19238. family name: Küzmös. Origin of the name: unknown, surely non-hungarian
2.) E1b1b-V13-Z5018 (not completed yet). f.n: Szánthó. hungarian name
3.) I1-L22-FGC14412* fn: Szilágyi, hungarian name
4.) I2a-L621-A1328* fn: Tóth - hungarian name, but it means in the old hungarian language: slavic man
5.) I2a-L621-Y3118* fn: Kiss - hungarian name
6.) I2a-L621-Y3118 (not completed yet). fn: Molnár -hungarian name
7.) Q-L330-BZ427 fn: Csehely, origin of the name: unknown, in hungarian it means nothing. According to Maciamo, this bloodline is hunnic. But I think: alan.
8.) R1b-U106-DF98-S22116 fn: Dobi, hungarian name
9.) R1b-U106-L48-S21728 (not completed yet) fn: Varga, hungarian name
10.) R1b-U152-Z49-S8172* fn: Béres, hungarian name
11.) R1a-L664-S2866* fn: Simon, hungarian name
12.) R1a-M458-YP415 fn: Kalenyák (originally Kalinyak) slavic name, probably rusin.
13.) R1a-CTS1211-YP4706 fn: Küzmös, origin of the name unknown.
14.) R1a-CTS1211-YP1701* fn: Petruska, slavic name, rusin or slovakian
15.) R1a-CTS1211-YP234* fn: Király, hungarian name
Just 2/15 bear slavic name, and these two from my ancestors has slavic Y DNA. They will surely melt later.
Among the hungarians the family names were formed in the 1400s. So the other 13/15 (including the other slavic, germanic, celtic Y chr bearers) were hungarians before the ottoman wars.