Overleaf has partnered with a number of publishers to generate official (and unofficial) templates for submitting to their journals. Rather than fighting with Microsoft Word and reconciling multiple versions from multiple authors, Overleaf allows you and your collaborators to edit documents simultaneously in a streamlined fashion. Once you have completed editing your document, simply convert it to a PDF and it is ready to submit to your journal of choice.
Here are some links to LaTeX templates that you can use in Overleaf to prepare documents to submit to specific publishers