We love loom on our team for sharing quick demos or walkthroughs that would be ripe for ambiguity and miscommunications if they only came with writing and/or static drawings. A 5 minute loom for the right things saves hours of wasted time
Absolutely love Twist. It's like Notion and Slack combined but without the super broad functionality focus of Notion and the endless pinging and back and forth of slack.
Absolutely love notion. It's clean, simple, but also incredibly powerful. The one thing people either love or hate is the blocks - I generally like the block concept, but occasionally I bang my head against a wall getting something to work the way I need it to.