Updating notifications - lemm.ee

Hi, all. My wife and I recently got new phones, and it got me thinking again about how notifications work. Currently I have several automations (maybe 10) that send notifications to my phone, her phone, both, and possibly other devices. But when we get a new phone, or replace a tablet, etc., I have to update every single one of those automations. And I inevitably forget some or introduce errors. Is there a better way to do this? For example, it’d be nice if I could abstract the concept of “my phone” out in those automations, then I’d only have to change the device “my phone” in one place, rather than a bunch of places. Any thoughts on this? Maybe I’m missing a way to do it. Thanks.