After OneWeb 20, the streak is 15 boosters landed.

I think the main question in my own mind is whether SpaceX will ever retire boosters. They don't seem to have a lot of occasions when they get a mission that compels expending the booster, so they just keep launching them. Eventually this hits some kind of hardware resilience limit.

I'm betting Yes, but there's a strong downward pressure by the Starship here

Currently, 3 days later, their current streak is already at 2.