From my research, there was never such a thing as allodial title in the US. Allodial titles were abolished after William the Conqueror's (or the Bastard depending on perspective) invasion of England. It abolished allodial title for all except the King (and there is dispute if even the King retained allodial title to the lands after pledging them to the Vatican, but that's another story....). France had allodial title before the French Revolution but only for ecclesiastical properties.
The highest forms of title in the US for land are land grants or land patents.
For more info: David Wilbur Johnson
http://freedom-school.com/property-rights.html
and here:
David Wilbur Johnson