#list = [ ["1 NWZ", "1 RWZ", "2 NWZ", "2 RWZ", "1E HZ", "1W HZ", "1-2EHZ", 2.0, "2W HZ", etc...] 
                                                                          #^ 
#["1 NWZ", "1W HZ", "3E FZ", "SNOK", "POK", 4.0, "1-2EHZ", "2E AK", "2W HZ", etc...] 
                                           #^ 
#["1 BW", "1AW AS"K, "3E FZ", "1BWAK", "POK", "TESTK", "1-2EHZ", "2E AK", 1.0, etc...] ] 
                                                                         #^
listed = [ ["1 NWZ", "1 RWZ", "2 NWZ", "2 RWZ", "1E HZ", "1W HZ", "1-2EHZ", 2.0, "2W HZ"],
["1 NWZ", "1W HZ", "3E FZ", "SNOK", "POK", 3.0, "1-2EHZ", "2E AK", "2W HZ"],
["1 BW", "1AW AS", "3E FZ", "1BWAK", "POK", "TESTK", "1-2EHZ", "2E AK", 1.0]] 

def sortOnFloat(sublist):
    return [v for v in sublist if isinstance(v, float)]

listed.sort(key=sortOnFloat)

for sublist in listed:
    print sublist