Very true, many ways to get to the same end result.

In my case for the last year I've worked with a songwriting partner, I do the music and she does the melody/lyrics.

Mostly I come up with the basic idea for the song, I come up with a chord progression for verses and chorus etc. on guitar. At that point I have an idea what I want it to sound like so I transfer it over to BIAB to build the basic bed. Then I send it over to Chris and if she likes it she comes up with the melody and the lyrics. Lots of back and forth of course as the song develops, moving verses around, etc.

In one case she already had a song written with lyrics and melody and sent me over a demo of just her singing. I found a chord progression that worked well with the melody, and built the bed based on that.