Undertale: (1st-5th in order) Hopes and Dreams, BATH (Battle Against a True Hero [also funni initials]), Undertale (as in OST 071), Fallen Down (Reprise), ASGORE.
Deltarune: (again 1st-5th) Attack of the Killer Queen, THE WORLD REVOLVING, My Castle Town, Don't Forget, A CYBER'S WORLD?
Happy that I wasted 10 minutes of my life trying to remember their names?