Typical and Sherman rarely go together. Each tank variant was made by a different manufacturer and underwent changes from their combat debut in North Africa to the MTO, ETO and post Bulge.
While this website is dedicated to modeling 1/72 scale Shermans and the various available kits, it does have a lot of information that you might be looking for.
https://www.172shermans.com/whatsnew.htm
And there are plenty of links to Sherman modeling here too:
http://usarmymodels.com/ARTICLES/articles.html