I thought the subscription libraries were different and the updates were only rolled in later than they hit the regular ones.

So why is vim-minimal in the e-mail, but systemd-sysv not, as they are from the same library.
Similarly nethserver-base and nethserver-cockpit-lib is, but nethserver-cgp and nethserver-vpn-ui aren’t.
[root@Nethserver ~]# yum repolist -v
Loading "changelog" plugin
Loading "fastestmirror" plugin
Loading "nethserver_events" plugin
Config time: 0.015
Yum version: 3.4.3
Loading mirror speeds from cached hostfile
* sb-base: u2.nethserver.com
* sb-centos-sclo-rh: u2.nethserver.com
* sb-centos-sclo-sclo: u2.nethserver.com
* sb-epel: u2.nethserver.com
* sb-extras: u2.nethserver.com
* sb-nethserver-base: u2.nethserver.com
* sb-nethserver-updates: u2.nethserver.com
* sb-updates: u2.nethserver.com
Setting up Package Sacks
pkgsack time: 0.010
Repo-id : sb-base/x86_64
Repo-name : Stable mirror: CentOS Base 7
Repo-revision: 1543161601
Repo-updated : Sun Nov 25 08:00:34 2018
Repo-pkgs : 10,019
Repo-size : 9.4 G
Repo-mirrors : https://mirrorlist.nethserver.com/?repo=base&arch=x86_64&nsversion=7.6.1810&usetier=$YUM0
Repo-baseurl : https://u2.nethserver.com/stable/7.6.1810/base/x86_64/ (1 more)
Repo-expire : 7,200 second(s) (last: Mon Jul 15 07:05:04 2019)
Filter : read-only:present
Repo-filename: /etc/yum.repos.d/subscription.repo
Repo-id : sb-centos-sclo-rh/x86_64
Repo-name : Stable mirror: SCLo rh 7
Repo-revision: 1562597140
Repo-updated : Mon Jul 8 07:47:55 2019
Repo-pkgs : 8,366
Repo-size : 7.3 G
Repo-mirrors : https://mirrorlist.nethserver.com/?repo=centos-sclo-rh&arch=x86_64&nsversion=7.6.1810&usetier=$YUM0
Repo-baseurl : https://u2.nethserver.com/stable/7.6.1810/centos-sclo-rh/x86_64/
: (1 more)
Repo-expire : 7,200 second(s) (last: Mon Jul 15 07:05:05 2019)
Filter : read-only:present
Repo-filename: /etc/yum.repos.d/subscription.repo
Repo-id : sb-centos-sclo-sclo/x86_64
Repo-name : Stable mirror: SCLo sclo 7
Repo-revision: 1561390845
Repo-updated : Mon Jun 24 08:40:50 2019
Repo-pkgs : 780
Repo-size : 237 M
Repo-mirrors : https://mirrorlist.nethserver.com/?repo=centos-sclo-sclo&arch=x86_64&nsversion=7.6.1810&usetier=$YUM0
Repo-baseurl : https://u2.nethserver.com/stable/7.6.1810/centos-sclo-sclo/x86_64/
: (1 more)
Repo-expire : 7,200 second(s) (last: Mon Jul 15 07:05:05 2019)
Filter : read-only:present
Repo-filename: /etc/yum.repos.d/subscription.repo
Repo-id : sb-epel/x86_64
Repo-name : Stable mirror: EPEL 7
Repo-revision: 1562807525
Repo-updated : Wed Jul 10 18:14:20 2019
Repo-pkgs : 13,297
Repo-size : 15 G
Repo-mirrors : https://mirrorlist.nethserver.com/?repo=epel&arch=x86_64&nsversion=7.6.1810&usetier=$YUM0
Repo-baseurl : https://u2.nethserver.com/stable/7.6.1810/epel/x86_64/ (1 more)
Repo-expire : 7,200 second(s) (last: Mon Jul 15 07:05:06 2019)
Filter : read-only:present
Repo-filename: /etc/yum.repos.d/subscription.repo
Repo-id : sb-extras/x86_64
Repo-name : Stable mirror: CentOS Extras 7
Repo-revision: 1560955949
Repo-updated : Wed Jun 19 07:55:32 2019
Repo-pkgs : 419
Repo-size : 588 M
Repo-mirrors : https://mirrorlist.nethserver.com/?repo=extras&arch=x86_64&nsversion=7.6.1810&usetier=$YUM0
Repo-baseurl : https://u2.nethserver.com/stable/7.6.1810/extras/x86_64/ (1 more)
Repo-expire : 7,200 second(s) (last: Mon Jul 15 07:05:07 2019)
Filter : read-only:present
Repo-filename: /etc/yum.repos.d/subscription.repo
Repo-id : sb-nethserver-base/x86_64
Repo-name : Stable mirror: NethServer Base 7
Repo-revision: 1544698988
Repo-updated : Thu Dec 13 03:03:18 2018
Repo-pkgs : 322
Repo-size : 1.0 G
Repo-mirrors : https://mirrorlist.nethserver.com/?repo=nethserver-base&arch=x86_64&nsversion=7.6.1810&usetier=$YUM0
Repo-baseurl : https://u2.nethserver.com/stable/7.6.1810/nethserver-base/x86_64/
: (1 more)
Repo-expire : 7,200 second(s) (last: Mon Jul 15 07:05:07 2019)
Filter : read-only:present
Repo-filename: /etc/yum.repos.d/subscription.repo
Repo-id : sb-nethserver-updates/x86_64
Repo-name : Stable mirror: NethServer Updates 7
Repo-revision: 1562748942
Repo-updated : Wed Jul 10 01:56:04 2019
Repo-pkgs : 407
Repo-size : 1.6 G
Repo-mirrors : https://mirrorlist.nethserver.com/?repo=nethserver-updates&arch=x86_64&nsversion=7.6.1810&usetier=$YUM0
Repo-baseurl : https://u2.nethserver.com/stable/7.6.1810/nethserver-updates/x86_64/
: (1 more)
Repo-expire : 7,200 second(s) (last: Mon Jul 15 07:05:08 2019)
Filter : read-only:present
Repo-filename: /etc/yum.repos.d/subscription.repo
Repo-id : sb-updates/x86_64
Repo-name : Stable mirror: CentOS Updates 7
Repo-revision: 1562188294
Repo-updated : Wed Jul 3 14:25:02 2019
Repo-pkgs : 2,231
Repo-size : 11 G
Repo-mirrors : https://mirrorlist.nethserver.com/?repo=updates&arch=x86_64&nsversion=7.6.1810&usetier=$YUM0
Repo-baseurl : https://u2.nethserver.com/stable/7.6.1810/updates/x86_64/ (1
: more)
Repo-expire : 7,200 second(s) (last: Mon Jul 15 07:05:09 2019)
Filter : read-only:present
Repo-filename: /etc/yum.repos.d/subscription.repo
repolist: 35,841
[root@Nethserver ~]#
Cheers.