On a recent Daf Yomi, Sanhedrin 107b, there is a long passage that was censored by non-Jews. It has been discussed here, whether we should still learn the omitted parts or not. At one such question I've found a link to Chesronot haShas. Do we know what sources did the author have, when he compiled it? Are there other comprehensive lists, similar to an example in Wikipedia, that compare the text variants of different important manuscripts?
[The mentioned work of Peter Schäfer on Wikipedia compares a few passages relevant for his work]