There are posts on SN for most of those companies.  Below is a subset of those: 
 
*LightningEscrow API Demo Video - Beta V1*
https://stacker.news/items/14174
https://www.youtube.com/watch?v=OufAyoxfH9M

*Michael Bumann & Moritz Kaminski on Alby & Improving Lightning Payments | The Kevin Rooke Show | E28*
https://stacker.news/items/14717
https://www.youtube.com/watch?v=07HAcQDDAmo

*Show SN: Vida, a way for anyone to contact you as long as they pay you bitcoin in real-time!*
https://stacker.news/items/17789
https://vida.live

*Moon - Shop Online with Cryptocurrency*
https://stacker.news/items/3360
https://paywithmoon.com

Timeline:
 
- [00:02:03](https://www.youtube.com/watch?v=LmFWVSnlMWc&t=123) Tristan Bietsch, CEO, and SuperTestnet, CTO, Lightning Escrow
- [00:17:25](https://www.youtube.com/watch?v=LmFWVSnlMWc&t=1045) Ethan Rose, CEO and Founder, Pouch
- [00:29:32](https://www.youtube.com/watch?v=LmFWVSnlMWc&t=1772) Anant Tapadia, Founder and CEO, Hexa Wallet
- [00:49:04](https://www.youtube.com/watch?v=LmFWVSnlMWc&t=2944) Moritz Kaminski, Co-Founder and Core Contributor, Alby
- [01:06:34](https://www.youtube.com/watch?v=LmFWVSnlMWc&t=3994) Lyle Pratt, CEO, VIDA.live
- [01:22:35](https://www.youtube.com/watch?v=LmFWVSnlMWc&t=4955) Philipp Hoenisch, Co-founder, and Daniel Karzel, Co-founder, ItchySats
- [01:34:33](https://www.youtube.com/watch?v=LmFWVSnlMWc&t=5673) Ken Kruger, Founder and CEO, Moon

cryptocoin

There is another post here on SN for Startup Pitchday - Bitcoin Companies - Part 2, in which @k00b pitches Stacker News.
(I'm not sure Part 2 means that video is Part 2 with this video being Part 1, or if they are in different categories and thus unrelated)

*Startup Pitchday - Bitcoin Companies - Part 2 - Bitcoin 2022 Conference*
https://stacker.news/items/20456
https://www.youtube.com/watch?v=15CTQYXIJcQ