I designed a condensed version of a 5E character sheet a little while ago and put it up on the DM’s Guild. Just thought I’d mention it here too.
I often have NPCs who end up being party allies. In order to keep track of their combat stats I want the condensed information of a monster stat block and the flexibility of a full character sheet. I found some other options online but none of them suited my needs and sensibilities. So I designed my own.
(I happen to be a former decent-ish designer, so I know my way around information design and Adobe Illustrator.)
The pdf is available for free on the DM’s Guild, as I mentioned.