Hello Matt,

Lots of professional and aspiring writers work in teams. Most pro songwriters now write collaboratively. I suggest you check out Songtown, run my Marty Dodson and Clay Mills, who have a string of number ones between them and are very generous with their insights about how the industry works. They have written a several books, including A Songwriter's Guide To Mastering Co-writing.

https://www.amazon.com/Songwriters-Guide-Mastering-Co-Writing-Techniques/dp/1543958311/ref=sr_1_1?dchild=1&keywords=a+songwriters+guide+to+co-writing&qid=1633460309&sr=8-1

Teams will often include a 'track guy' who may bring a backing track or develop one as the song progresses. Someone like Marty is brought in to focus on lyric and concept. Songs are often written with artists and a group of writers.

Another book, Song machine: Inside the Hit Factory, explains the recent history of teams around the world crafting today's pop songs.

https://www.amazon.com/Song-Machine-John-Seabrook-audiobook/dp/B015TM12RS/ref=sr_1_1?dchild=1&keywords=the+song+machine&qid=1633460341&sr=8-1

Hope this helps.