  We introduce a new class of models describing the quark mass hierarchy. In
this class, the dynamics primarily responsible for electroweak symmetry
breaking (EWSB) leads to the mass spectrum of quarks with no (or weak) isospin
violation. Moreover, the values of these masses are of the order of the
observed masses of the down-type quarks. Then, strong (although subcritical)
horizontal diagonal interactions for the $t$ quark plus horizontal
flavor-changing neutral interactions between different families lead (with no
fine tuning) to a realistic quark mass spectrum. In this scenario, many
composite Higgs bosons occur. A concrete model with the dynamical EWSB with the
fourth family is described in detail.
