Who makes title sequences?

who makes title sequences?
title sequences are made to introduce the both the film and the production companies involved. Previously title sequences were short and not very elaborate, however, recently title sequences have been made to be very flashy and bring the viewer into the film. An example of an old title sequence is this one from 1943 and shows how simplistic they used to be.
However as you can see in this next example, title sequences have changed an awful lot and make the viewer start to feel engaged even before the film has started. (Spectre intro credits) From watching a variety of different title sequences i have learned that over the years it has become more of a big thing to have big flashy title sequences to entice the viewer in, whereas back in old films it was simply made to show who helped create the film and merge this into the film on some way so that it looks in place. From both of these i have learnt that they need to blend in with what is happening in the opening sequence and not look out of place.