Line guides do move the ball in a certain position. Normally they are used to make multiple lanes, with ball switches between them. Normally they have light below them.
For example, you can see some here in a firepower playfield:
They come is different sizes. They come in both double sided or single sided guides.
This is a 40mm short double sided lane guide.
A single sided lane guide with pins.
A re-enforcement rib was added to absorb pinball collisions better. The sides acing the pins are angled in two dimensions to allow the rubber to pass.
I also experimented with other shapes, like this pyramid. Does not fit a firepower Scifi pin to well.
Still it is an interesting shape, and will use it in the future. Still needs a bit of tuning by making the center parts a bit larger.