now the grace period is gone, it's almost pot luck. If there are 100 variants I would be surprised if they all got noteable traffic unless it was an extremely popular site (i.e. top 5,000 alexa)
As a little bit of help, the ones I tend to find perform best are
the missing 2nd or third letters- may also apply to other letters but generally the ones with one dropped letter are best.
Common misspellings and plurals
these tend to perform better than extra letters, swapped letters etc, but this is a very general and basic rule, not hard and fast.
I would reg these first, test and then reg others if they hadn't gone already perhaps