doc listing of a full install's structure?

[Frank Fenderbender]

I seek two 
1) a full structural listing which I require for partitioning;
2) the minimum-required and performance-optimizing sizes for each.

Ubuntu 18.04 is the primary OS  on the first internal drive, whereon exists the EFI partition and the GRUB install.
This (1-TB) internal HD will be used for FreeBSD only, however, I want the HD's partitions to match the structure so that backups are more-easily scheduled according to use, that data corruption is minimized, and so that system-restores are manageable.

Thanks
"frank"