Yes, absolutely it's normal.
No user process created these. They were spawned when SQL started and they won't terminate until the SQL instance stops. That's why they have such huge wait times. System processes all wait a lot, it's normal, that's why those wait types are excluded from all well-written wait-analysis scripts. They're waiting for any work that they need to do.
This is what my desktop PC's SQL instance looks like, machine's been up for a week and SQL's barely been used in that time.
Microsoft Certified Master: SQL Server, MVP, M.Sc (Comp Sci)SQL In The Wild
: Discussions on DB performance with occasional diversions into recoverability
We walk in the dark places no others will enter
We stand on the bridge and no one may pass