Huseby is correct, but things get more interesting when you delve into which 1h and 2h retain overheads and stabs. It seems only true swords have them as far as 2h goes, axes of any type seem to only swing left and right. The shortened military scythe does not count as a true sword, and of course 3 way 1h swords only have their 3 ways.
As far as length goes, the pratice long sword is the longest weapon from horseback followed by the shortened mil scythe, outside of the hafted blades of course. Then you have the long sword at 106, then the heavy bastard and Arabian cav sword at 105. Then there is quite a few 1h with 100-105 reach and the bastard sword with 100. So as you can see, as far as decent weapons go, 1h are not suffering a big reach disadvantage against 2h cav.