Hi Harvey,
Everyman definitely has some favourite grids. Last week is a good example and he uses it, or variations close to it, regularly.
It has a big cross in the middle, two little crosses and two of what I call “teddies” (because they look like teddy bears? :-).
With this grid you can have a fair bet that the rhyming pairs will be in either of the symmetrically placed 11a and 20a, or 3d and 12d positions.
On the subject of grids, yesterday’s prize puzzle grid was also interesting and one that crops up fairly regularly. Unlike any other Guardian grid it has every solution length from 3 all the way to 10 and with 33 lights, one of the highest clue counts available.