One may also find Arthur Sullivan (of "Gilbert and"), Vaughn Williams, William Byrd, Thomas Tallis, Haydn, Mozart, Palestrina, Ignaz Pleyel, Henry Purcell, Martin Shaw, Jean Sibelius.
I do not have the Baptist hymnal, but a Presbyterian one dated 1955--- a very recent date when one considers that many of the tunes are hundreds of years old, and maybe much older than that. Still, I believe it's been superseded by a more recent edition.
Some were knocked out by the bushel by the ecclesiastical equivalent of Tin Pan Alley, but many are very lovely and worthwhile. Still, if it's a matter of simply improving the ability to read at sight (so valuable in a church accompanist), I suppose it hardly matters... though I don't like to spend my practice time on pieces which are meaningless to me, musically. This book has a round 600 numbers, so it offers a lot of latitude.
Gottschalk--- you don't say... no, I would not have expected to find him in a hymnbook, in a church. That's latitude, all right.