Here are some links that may come in handy for a few people, feel free to add any I may have missed. There is obviously a limit to the number of links that can be added to a single post. so I left the URLs to copy and paste.

Hodgdon, IMR & Winchester Powders
http://www.hodgdonreloading.com/

Alliant Powders
http://www.alliantpowder.com/reloaders/

Accurate Powders
http://www.ramshot.com/load-data/

Vihtavuori Powders
https://www.vihtavuori.com/reloading-data/

Ramshot Powders
http://www.ramshot.com/load-data/

Norma Powders
https://www.norma.cc/en/Ammunition-A.../Loading-Data/

Shooters World Powder
https://shootersworldpowder.com/reloading-guide/