Simulation of light travel time - and redshift - in a uniformly expanding universe
References This article - while not focused on cosmological redshift, but more on big picture "why bother exploring" question - has in the middle of it an animation of cosmological expansion, followed by an illustration of cosmological redshift: https://medium.com/starts-with-a-bang/dark-energy-holds-the-ultimate-lesson-for-todays-scientific-frontiers-c867309b2584