Ok, I've worked out how to take the different types of corner. Some of you may have known this all along but I've certainly been asking this on various forums for years with no joy, only other people also asking how it's done. I don't know if these controls would have worked on FIFA 09 or 08, in fact.
Basically the instructions are missing an extra press of the lob pass button (I'll say O instead of the lob pass button since I use PES controls on PS3). All of the multi-taps have to be pretty quick as well; luckily they don't have any impact on the final gauge so you can machinegun away without fear of ballsing it up.
To take a driven corner, double tap O and then press and hold O to charge up the gauge. That's three button presses in total.
To take a corner along the ground, triple tap O and then press and hold O to charge up the gauge. That's 4 button presses in total.
Having just switched the PS3 off I've remembered what I was supposed to do - save videos of these corner types!

Anyway, the driven corner is very low and hard indeed. It never gets above crossbar height. I almost scored when I accidentally discovered it, as the ball flashed across the corridor of uncertainty and Ibra toe-poke volleyed it wide when he should have scored. Having tried it a couple more times, you can get some swerve on these, but obviously not nearly as much as on high corners. I've not had enough goes with it to experiment with holding up or down to change the trajectory as with normal corners.
The one along the ground is, obviously, along the ground. I've had people run in at the near post and try to turn it in but in two attempts I haven't been able to beat the man on the near post or the keeper. I've not really experimented with aiming for other parts of the area yet but it seems perfect for the Sheringham corner. Once we have custom set pieces to play with these should all become quite useful.
I've tried the low ball from a free kick with no luck. It might not be possible, in which case we'd have to just be very clever with the driven shot.