the desktop versions are Basic, Deluxe, Premier and Home and Business. All desktop versions have the same forms just the higher versions offer more help
https://turbotax.intuit.com/personal-taxes/cd-download
assuming the LLC is a single-member entity that has not elected S-Corp or C-Corp treatment the LLC is a disregarded entity that does not file its own return. Premier, as you know, will handle rental properties. Being a single-member LLC has no effect on your 1040 sp upgrading to H&B is your choice. Your other family members can also use H&B. it really makes no sense to have
the tax file XXXXX.tax2023 can be opened by any 2023 - 1040 version of Turbotax as long as all forms in the return are handled by the app which is true for all desktop versions but not for all online versions.
You can't install two versions of the 1040 software on the same computer. If you decide on H&B your family members can use that version to prepare their 2023 returns.
