I don't know what "OG" track plans are, but there are many software tools for layout design out there. SCARM, XTRAK, 3RDPLANIT, Atlas Right Track (I use version 8, version 10 is so bad it's bugs have fleas), Anyrail, RailModeler Pro, etc. But, I don't know any of which that have a feature to present pre-made track plans based on specifications. For that, you might have better luck on the former Kalmbach MRT site that has a layout library of all the layouts featured in the magazines over the years. Those are sortable by size.
Not certain what you are referring to here either, but a layout design (track arrangement) has nothing to do with the control system to be used on it. Manual push by hand, AC, DC, TCS, DCC, or any of the other 10s of possibilities, does not matter.