You can try https://bitcoinstrings.com/, but it's totally converted to text and the blocks' data aren't displayed.
OP_return data were translated too, just ignore them or highlight all the "Mined by" lines then search from other source about which blocks are included in that particular blkXXXXX.dat number.
Sort it out, and you might find what you need.

However, the site's updates were not that frequent (about daily to four times a week)