Cheating is good for you and you should always do it. There's a lot of "cheats" that artist have and it would not be classified as most of the things people have mentioned... As most of those things would be theft... Which isn't cheating it's just illigal.
Most cheating tips I've learned over the years to make comic making faster/easier
Reusing backgrounds - especially if the background has not been seen in a couple of pages there's no reason you can't copypasta, trace over, or use it as a reference for establishing shots. Movies do it all the time, why can't you?
Tracing- no not other people's art YOUR OWN art! Yes it's a big brain idea isn't it (it isn't) if you got deadlines, things to do, having a panic attack, got into a car accident- sometimes you just need to get your shit done. Trace your own shit for that one panel that just isn't working for you. Maybe you could have done it once you got a good night sleep but shit needs to get done tonight and you don't got time to sleep. This also leads into my next point-
Copypasta faces- if youre trying to do something slapstick and your gonna have multiple panels of people standing in one spot there's no need to redraw it over and over and over again, just copy pasta those panels till the final panel where everyone is screaming or laughing. If anything this can make the slapstick better.
Copypasta resources- I mostly see this from a lot of premium (sorry premium friends I'm about to out you) a lot of them will make these HYPER detailed earrings, bracelets, necklace and other garments- they do this by making this item super detailed in one saved file and then reusing it (resizing it and distorting it) on wherever they wanna put it on their characters.
Don't put backgrounds in panels- if your characters arnt moving around or sitting in one place for a long time there's no reason to draw the same.background over and over and over again. Most people know that your character have in fact not moved yet.
Filters - another premium comic thing I'll see is using free stock photos- throwing a filter on it and throwing it into the background, I personally find this one a bit more trachy but you gotta do what works for you and find chests that work with your style and timeline.
Brushes - making custom brushes to make the lines that you would normally draw but it draws it for you instead- clip studios is much easier to work with this cheat then Photoshop but you can manage somewhat in Photoshop. The creator of the comic Sunstone has a lot of great tutorials on this possess it you need examples
And that's it for what's on the top of my head.
Remember cheating is good for your work flow- but you have to find chests that work for YOUR work flow.