it looks to me and hubby that you have a legbar x leghorn cross to get the topknot and white of a leghorn
identifying characteristics of a cream legbar
The Cream Legbar is a cross between the Brown Leghorn, Araucana and Barred Plymouth Rock. It is an autosexing breed which means young chicks can be sexed by the colour of their down shortly after hatching. The 'barring' pattern that is found on Cream Legbars are sex-linked, i.e. the males have two chromosomes for barring and the females only one.
but you will get a through back with a male that will just have the white and grey baring over the whole body.
as cream legbars only come like this Male – A yellow beak, legs and feet. Red face, comb and wattles. Ear-lobes white or cream A cream and grey crest, barred dark grey breast and tail with slightly paler sickles. Some white is permitted. Cream barred neck and saddle hackles, dark grey tipped with cream. Dark grey barred primary feathers in the wings, secondary feathers have grey barred coverts with cream tips. The back and shoulders are cream, barred dark grey. Weight should be between 2.75 and 3.5Kg.
Female – A yellow beak, legs and feet. Red face, comb and wattles. Ear-lobes white or cream. A salmon coloured breast and silver-grey body with broad indistinct barring. Primary feathers of the wings are peppered grey, the secondary feathers are lightly barred, with silver grey coverts. The tail has light barring. Neck hackles are cream with soft grey barring. Weight should be between 2 and 2.75Kg.
Leghorn
The White Leghorn is the most common of the lighter breeds. Before the introduction of cross-breeds, the female was considered one of the best layers and was used on many commercial egg farms. The White Leghorn should be pure white. This is a dominant characteristic - if White Leghorns are crossed with any other breed, the progeny will be almost completely white. Beak and legs are yellow, and earlobes white.
White Leghorns are small and should not be used as table birds. They are practically free from broodiness, which makes them an ideal layer. However, they are often nervous, particularly the hens, and care should be taken not to make sudden, abrupt movements or loud noises.
Other leghorns, such as the brown, black and blue, are less common. They tend to lay fewer eggs and are mainly kept by fanciers.