Before revision: We study the dynamic geometry, loci , and invariants of three Poncelet families associated with three distinct concentric Ellipse pairs: with-incircle, with-circumcircle, and homothetic.
After revision: We compare loci types and invariants across Poncelet families interscribed in three distinct concentric Ellipse pairs: with-incircle, with-circumcircle, and homothetic.