Superlative form of the adjective "little" for degree or intensity

Inflections of ‘little’ (adj):

1. For size or age:

Littler ("That tree is little, but the tree next
to it is even littler."). Littlest ("Theo is the littlest of my three
little brothers.")

2. For amount:

less (e.g. "I have little money. Certainly less money
than him.") Least (—e.g. "I have little money, but Jim is the one who
has least money out of all of us.")

3. For degree or intensity

Lesser (—e.g. "She has little love for him.
Certainly, her love for him is lesser than her love for her mother.")

Then what’s the superlative form of the adjective "little" for degree or intensity?