For baseboard, there are 2 options :
1. Your floor tile as baseboard.
2. Pinewood baseboard is very recommended.
The baseboard\tile quantity is mentioned in your material list, it goes based on LF.
Home Depot link :
https://www.homedepot.com/b/Building-Materials-Moulding-Millwork-Moulding-Baseboard/Wood/N-5yc1vZcbjpZ1z0vir2
For a straight and clean look baseboard :
https://www.homedepot.com/s/primed%2520pine%2520board?NCNI-5
Master Building link:
https://www.mastersbp.com/
Master Building has more options for molding since that's what they focus on, they work only with contractors, so if you'd like to use one of their products, just share it with us the link\SKU and we'll get it.
Door Casements:
Standard door will need (3pcs each size, for both size will need 5pcs)
For a Flat modern look - https://www.homedepot.com/p/Trim-Board-Primed-Pine-Finger-Joint-Common-1-in-x-3-in-x-8-ft-Actual-719-in-x-2-5-in-x-96-in-424600/202085979
Different design - https://www.homedepot.com/b/Building-Materials-Moulding-Millwork-Moulding-Door-Window-Moulding-Casing/Wood/Casing/N-5yc1vZclf5Z1z0vir2Z1z135qs
