Below is a reddit post I made on r/graphenOS before realizing there was a transfer:
Hello.
I have been searching these pasted few days for how I can best transfer data (Contacts, Apps, Files, Photos, etc.) from my Samsung Android 13 phone to my new Pixel 8 phone running GraphenOS.
On r/GrapheneOS I have found some useful posts, with the commenter on this post providing some information I currently have found the most useful. The 5 steps from the commenter seem good, though I currently plan to purchase My Backup for the transition and routine backing up down the line as the commenter mentions it.
If anyone here can help to validate that using the premium My Backup app for all of this is a good choice, or if you have different advice, please share. Thanks.