It depends on what you mean by “low light photography”...
There are a couple of people here who have used slow film and really long exposures with the LX’s fancy meter to do some amazing things... I’m guessing that’s not what you mean
For ‘general’ ambient light shooting with a relatively fast lens, I like Ilford XP2 for its ease of processing and generally predictable behavior. I usually shoot Fujicolor 400 because it’s cheap... both of those also play nice with flash when needed.
I used to use TMAX 3200 for indoor sports. I regularly pushed it to 12,800 ISO. It’s pretty bad when pushed that far, but decent for newsprint...
But, honestly, modern digital has changed what ‘low light’ means to me, and I haven’t seen film that can keep up with a K1...
-Eric