From the photos I see neither appear to be 100% isabella (aka isabel). They have patterns, so also have lavender feathers.
Well then I don't know what your "Isabella" would be.
Just as the lavender variety is based on a solid black feathered bird with all the feathers diluted to lavender an isabella would be based on a solid gold (red/buff) bird with all the feathers diluted to
"soft orange or creamy light straw colour". I believe the patterned varieties that some call isabella should be called lavender brown, lavender partridge, lavender wheaten, etc. of maybe isabella brown, isabella partridge, isabella wheaten, etc. "Isabella" should be reserved for a solid (or fairly solid) color, just as lavender is.
I don't know that anyone has created a pure/100% isabella chicken.