Is this a normal Disk Partition Configuration?

Question

I'm new to mac I just got my first macbook used last week. I was trying to install Windows 10 via boot camp and it told me it could not due to some issue and to check Disk Utility. I have used Linux and Windows to a lesser degree most of my life, but I am embarrassed to say I don't fully understand this. I ran diskutil list & diskutil apfs list and this is the output. I saw these commands on some other post and thought they may be helpful. This is probably completely normal. I am sure I just want to understand. I am on the newest update of Catalina MBP Mid 2017. Also, it is not super important to get Boot Camp running Windows. I was just experimenting, but does anyone see an obvious reason why there would be an issue? Thank you!

/dev/disk0 (internal, physical):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                        *251.0 GB   disk0
   1:                        EFI EFI                     314.6 MB   disk0s1
   2:                 Apple_APFS Container disk1         250.7 GB   disk0s2

/dev/disk1 (synthesized):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      APFS Container Scheme -                      +250.7 GB   disk1
                                 Physical Store disk0s2
   1:                APFS Volume Untitled - Data         127.1 GB   disk1s1
   2:                APFS Volume Preboot                 83.8 MB    disk1s2
   3:                APFS Volume Recovery                528.5 MB   disk1s3
   4:                APFS Volume VM                      1.1 GB     disk1s4
   5:                APFS Volume RJ                      11.2 GB    disk1s5

SuperSecretCPU:~ adminMan$ diskutil apfs list
APFS Container (1 found)
|
+-- Container disk1 A7F6C36A-FBDB-4322-831A-9FC2CEF2606A
    ====================================================
    APFS Container Reference:     disk1
    Size (Capacity Ceiling):      250685575168 B (250.7 GB)
    Capacity In Use By Volumes:   140339167232 B (140.3 GB) (56.0% used)
    Capacity Not Allocated:       110346407936 B (110.3 GB) (44.0% free)
    |
    +-< Physical Store disk0s2 958D8FFE-D633-4F06-A962-CBDD37A8E6F5
    |   -----------------------------------------------------------
    |   APFS Physical Store Disk:   disk0s2
    |   Size:                       250685575168 B (250.7 GB)
    |
    +-> Volume disk1s1 A7C6B5CE-2F45-3C34-B29C-317C531A82E8
    |   ---------------------------------------------------
    |   APFS Volume Disk (Role):   disk1s1 (Data)
    |   Name:                      Untitled - Data (Case-insensitive)
    |   Mount Point:               /System/Volumes/Data
    |   Capacity Consumed:         127352475648 B (127.4 GB)
    |   FileVault:                 No
    |
    +-> Volume disk1s2 1A886DD1-7F92-4787-B32A-02620DF632E8
    |   ---------------------------------------------------
    |   APFS Volume Disk (Role):   disk1s2 (Preboot)
    |   Name:                      Preboot (Case-insensitive)
    |   Mount Point:               Not Mounted
    |   Capacity Consumed:         83750912 B (83.8 MB)
    |   FileVault:                 No
    |
    +-> Volume disk1s3 5806096A-0C66-4F74-9773-20B8D47F2E2A
    |   ---------------------------------------------------
    |   APFS Volume Disk (Role):   disk1s3 (Recovery)
    |   Name:                      Recovery (Case-insensitive)
    |   Mount Point:               Not Mounted
    |   Capacity Consumed:         528502784 B (528.5 MB)
    |   FileVault:                 No
    |
    +-> Volume disk1s4 5E468A33-0424-49C6-9249-42F0CDF2CFDE
    |   ---------------------------------------------------
    |   APFS Volume Disk (Role):   disk1s4 (VM)
    |   Name:                      VM (Case-insensitive)
    |   Mount Point:               /private/var/vm
    |   Capacity Consumed:         1074810880 B (1.1 GB)
    |   FileVault:                 No
    |
    +-> Volume disk1s5 612780D1-B6D1-47E4-9678-E5AE176EB13A
        ---------------------------------------------------
        APFS Volume Disk (Role):   disk1s5 (System)
        Name:                      RJ (Case-insensitive)
        Mount Point:               /
        Capacity Consumed:         11161202688 B (11.2 GB)
        FileVault:                 No

Jahhein · Answer

Put simply - Yes.

What you're seeing is the new Apple File System (APFS) which isolates a disk into containered volumes. NOTE: APFS is Volumes, not Partitions!

In Diskutility you can see you have your RJ Volume for your everyday reads/writes, and a Untitled - Data volume intended to be apart of apple's security which is designed to be unwritable even to you if you tried without a bunch of loopholes (SIP disabling) so foreign programs don't alter and corrupt the macOS system files (malware, you, etc)

The reason the partitioning in diskutil list and diskutil list apfs may seem strange is APFS is designed to expand and shrink. Meaning all volumes can utilize the entire disk until full which is why you see overlaping disk sizes of your entire disk size.

Is this a normal Disk Partition Configuration?

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