I’m trying to setup LibreOffice for work but I didn’t find a variant that has the presets I was looking for wtihout manually changing the settings.
(Goal) All programs default save as XML 2007-2013 format.
Never use foreign file formats for ongoing work, especially DOCX/XLSX/PPTX. Work with ODF and only after finishing export to another format. Just search this forum and you will see that working with those formats, especially DOCX, is a straight way to data loss.
I absolutely support what @gabix advised. However, LibreOffice does contain a footgun for those who definitely want to make their lives more challenging. It is located at Tools-Options-Load/Save-General. You select document types from “Document type:” field one-by-one, and for each, you choose corresponding default save format in “Always save as:” drop-down list. Also note, that LibreOffice will stop issuing warning about possible problems for that type!
Oh, sorry. I didn’t notice the “when I install” requirement. Bad reading.
For enterprise deployments, you may use information available at this wiki. As mentioned there, “default format for documents … cannot be set during silent installation”. So, if you use Windows, you have a choice for post deployment configuration between registry backend (e.g., ADMX), and .xcd files. On other platforms, only latter is available.