John Gill Commentary Genesis 33:2

"And he put the handmaids and their children foremost, and Leah and her children after, and Rachel and Joseph hindermost." — Genesis 33:2 (ASV)

And he put the handmaids and their children foremost
In the first division, as being less honourable and less beloved by him: and Leah and her children after ;
still according to the degree of honour and affection due unto them; Leah being a wife that was imposed and forced upon him: and Rachel and Joseph hindermost ;
being most beloved by him, and therefore most careful of them; Rachel being his principal and lawful wife, and who had the greatest share in his affection, and Joseph his only child by her.