Suppose one works in field X, and has say two or three manuscripts ready for journal submission. Journal A is a good fit for all the manuscripts, but journals B and C would be appropriate as well.
All else being equal, is there any benefit in having papers in different journals? Does it hurt to have all of your papers, or say a substantial amount of them, in the same journal A? For example, would it be a good idea to submit one to journal A, and the other one to journal B?
I could think of someone saying "I read journals B and C, but not A", so in this sense spreading your research in different journals would make sense. But maybe this is not so typical to begin with.