From my experience the only one that lowers itself is SWAP depending on the amount of RAM you have. For a normal computer usage (Office stuff, gimp, music, videos, wine games..) with 4GB of RAM you have more than enough and you can put SWAP to a small size. In my case 256MB. From the 256MB i never use more than 2MB or 4MB.
That is an idea of how the SWAP would be depending on the amount of memory you have. The rule of 2x the amount of ram you have does not really apply on Linux systems. There are so optimized about this is scares me.
Going for the other 2, you have the / (root) partition and the /home (Home) partition. This is good way to go but I would suggest giving /Home about 90% of the 1TB space and the rest to /. This is because you will install many programs which will go in / but you will have songs, documents, videos and any other big files in /home. You will basically have more stuff in /home than anywhere else.
There is also the matter of having a /boot partition separated from the / one. This just helps in recovering issues and reparing boot part easier without affecting the system or you /home. Although in your case, since /home is separated from / you are safe there.
- In Way 1 if you had a system problem or a boot problem everything will have the problem. You can recover from it but it will be a mess with everything in the same partition.
- In Way 2 you have the /Home in another place so if there is a problem with the system or boot you are safe.
- In Way 3 you have the /Home and /Boot in separate places. So if there is a /Boot problem then it only affects boots. If there is a system problem it only affects the system and you can still boot... weirdly but you can still do it. And as always, your /home is safe.
There are many others like creating a /media/fun partition where you will store your videos, images, etc.. Or a /home/kathy for that special girlfriend/sister/mother/godzilla you have.
At the end, the way you partition is determined by the need and the way you will use the computer.