Factorised 3d $$ \mathcal{N} $$ = 4 orthosymplectic quivers

We study the moduli space of 3d $\mathcal{N}=4$ quiver gauge theories with unitary, orthogonal and symplectic nodes, that fall into exceptional sequences. find both Higgs Coulomb branches factorise decoupled sectors. Each sector is described by a single theory only unitary nodes. The orthosymplectic quivers serve as magnetic for 5d $\mathcal{N}=1$ superconformal field which can be engineered in type IIB string without an O5 plane. use this point view to postulate dual pairs deriving them theory. correspondence conjecture exact highest weight generating functions branch Hilbert series quivers, provide tests these results directly computing expansion.