I have used a mixture of things for my 1480s-90s Hungarians.
The Hungarian knight do seem to have kept the shield for longer than those further west, but eventually even they got rid of them. IIRC, Italian armour was more evident than German. I used mostly Mirliton knights.
For native Hungarian LH and Serbs, I used figures from the QR Polish 16th century range. Irregular do some pretty decent figures as well.
My foot includes quite a mix. The main sources are Vexillia and also quite a few from Minifigs (especially the Hussites). Irregular do some useful foot.
I haven't used any, but QRF/TSS do some Hungarian handgunners of a more local unarmoured sort rather than the armoured mercenary looking type. They are based on a picture from around 1500 so would work for a late Late Hungarian.
I used Irregular and Alternative Armies wagons. If they need to fit on 40 x 40 bases, Alternative are probably the better option. QR do wagons which are even shorter but you probably get more than you'd want for DBA in a bag.
Some of these suggestions won't be much use to you unless you want a lot of surplus figures as the bag sizes are a but big for DBA numbers.
looks at a multi-period building.