You might find some of what you are looking for in: "Scholl, Sholl, Shull genealogy the Colonial Years"by John William Scholl The books lists several Scholl /Shull families and in some cases when they came into this country. This is a large book 900+ pages in two volumnes.
Contents of this book are available thru Heritage Quest. Heritage Quest is available online thru some libraries.
If you would like, contact me direct and I can send you a copy of the "Contents" page from the book.
A reprint of the book is available from a publishing company but is quite expensive.