MicrosoftHi miguelisidoro - a few answers for you 🙂
1. Lists, no matter where you access them from, will have the same set of capabilities, design look and feel and options for customization. This includes lists you already use and any new ones you create going forward. There is only one lists product in the service and it now has a number of new entry points.
2. Yes. You can use lists in group-connected sites or standalone, be it a team site or communication site.
3. Lists currently support up to 30M items per list. And regarding the 5000 item view limit, please refer to my comment reply here. We aim to provide great scale, performance and user experience - always reviewing and planning updates.
Thanks, Mark Kashman (Lists PMM)
