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/