Silesian_Noble is right, knighthood was not adopted by hungarians as an idea during this period.
After a certain date "Magyars" will adopt knighthood in their process to their Hungarian kingdom.
There were hungarian heavy cavalrymen, but they were not knights, just armored horsemen.
Pre-1070 sources/battle descriptions don't mention western style heavy cavalry charges done by magyars.
(charges in general yes, but that is standard steppe tactic - even carried out by light cavalry - as the last/first - step of the battle)
The majority of the hungarian army were horse archers until about Muhi (1241) even though the amount heavy cavalry was increasing. This is especially true in the period before adopting christianity.
You can see the (I guess made up) banner of a german knight (Hunt) in Cronicae Pictum
The later banner of the same family (the Hont-Pßzmßny family is said to be the descendant of 2 german knights: Hunt and Pßzmßny)
Gutkeled family (also descendants of german knights)
I don't know any more families which were _certainly_ founded by foreign knights, while hungarians in general didn't use coat of arms in this timeframe.