OK, you actually have quite a few zigbee repeaters in that mix as all of your bulbs which are directly connected to the smartthings hub will act as repeaters (although they can be very bad repeaters and lose messages) and the pocket socket is also a repeater. ( sengled brand bulbs don’t act as repeaters, but you didn’t list any of those.)
Battery powered devices generally do not act as repeaters.
If you want more background on all of this, read post 11 in the following thread, then go up to the top of it and read the whole thread.
And here is more details about bulbs if you are interested:
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Anyway… Whenever you remove the smartthings hub from your network, which can include a power outage, intentionally removing it, or a hub firmware update, it is possible that the way your network had arranged itself, that is which end devices use which repeaters, Will get reshuffled. Sometimes this is because devices come back online in a different sequence then you had previously added them. (For example, if a pocket socket is getting a firmware update, it may stay off-line long enough that its previous “children,” The devices which were using it as a repeater, may start looking for a new repeater/parent.)
In most zigbee installations this is not a big deal because the devices are all pre-selected as being compatible.
With SmartThings, individual customers can add all kinds of different devices, which is nice, but it also means they can start selecting devices like the xioami ones which aren’t really engineered to work with gateways other than their own. Or they can start using devices like Hue bulbs in ways other than the manufacturer intended (like attaching them directly to a smartthings hub rather than going through the hue bridge).
All of which means your mesh may not work as well as it did before the hub went unavailable. Messages may get lost, devices may even be “orphaned” without an available parent, Some repeaters may be overburdened.
I’m not feeling very well today, so I’m sorry, I’m not up to walking you through the individual steps for checking whether this is what’s affecting you. Hopefully some other community members will jump in and help. Also, unfortunately, smartthings doesn’t give us any network mapping utilities to help with the process, so it can be quite a bit of trial and error.
But as a former field tech, if I were looking at your situation and given what you’ve already tried, I would start by testing the strength of the mesh. That’s particularly true because some of your devices are working and some are not, which would lead me to start looking for orphans or overburdened repeaters.
I’m sorry I can’t give you an easy answer, but the mesh that you had was pretty fragile, and it wouldn’t surprise me if something snapped this time around.