The best known (at least in the tech circles - in good part thanks to HN and Matt Levine) is probably IEX. The exchange guarantees that every participant is behind the exact same time delay. And they do that by having a sufficiently long spool of optic fibre between the exchange "broadcast switch" and the market maker computers.

Simple and effective. Relies only on laws of physics to create the delay.

There are also exchanges that run with "frequent batch auction" principles.[0]

0: https://econpapers.repec.org/article/oupqjecon/v_3a130_3ay_3...