If you define it as "less highs" up and down, I would probably say INTP is up there.
Even when they dip and flip around, they aren't often aware of it.
Otherwise, they're treating their emotions like objects to be understood, not feelings to be experienced. That's why the inferior explosions are so bad.
"Hey Capa -- We're only stardust." ~ "Sunshine"
â€śPleasure to me is wonderâ€”the unexplored, the unexpected, the thing that is hidden and the changeless thing that lurks behind superficial mutability. To trace the remote in the immediate; the eternal in the ephemeral; the past in the present; the infinite in the finite; these are to me the springs of delight and beauty.â€ť ~ H.P. Lovecraft