Probably the most common example is that colonies which have been around for a while and are stable often adopt new queens that turn up from outside. Then multiple queens are producing workers and you get a colony made of many distinct "families".

There are even examples of nests consisting of ants from different species. Quoting from the article I referenced earlier

> Ants engaged in parabiotic associations cooperate in a variety of ways including shared nest defense, trophallaxis, and communal use of trail pheromones. For example, “ant gardens” in the Neotropics (Davidson, 1988; Orivel et al., 1997) and in Asian rainforests (Kaufmann and Maschwitz, 2006; Menzel and Bluthgen, 2010) are often co-inhabited by species from the genera Crematogaster and Camponotus (along with a number of other genera) .... While brood chambers are kept separate, the rest of the colonies mix freely within the joint nest. In addition to sharing foraging trails to plant-based resources (Menzel et al., 2010), both species will defend the nest although larger Camponotus tend to exhibit the majority of the defensive behaviors (Menzel and Bluthgen, 2010).

[1] https://www.frontiersin.org/articles/10.3389/fevo.2021.73675...

https://en.wikipedia.org/wiki/Ant_colony#Colony_structure

I guess there are a couple of movies about that. :)

"Yes, the All-Wise Creator summarizes the principles of the Clear Book in most beautiful form and abbreviated fashion and with a particular pleasure and through a special need, and includes them in beings. If everything acts thus with a particular pleasure out of a particular need, it unknowingly conforms to the principles of the Clear Book." Quran's Light