I’ve been doing this same thing for a while now in Google Home, since that’s where I use most of my automations. I used to group things together by beginning routine phrases with the same words, but eventually I hit on the idea that using 1-3 emoji at the beginning of a routine name is an easier visual cue for me when I’m rapidly scrolling a long list. That helps me to organize my routines in makeshift groups since Google Home wants to sort them alphabetically.