Re: any information on how what schema complexType constructs are mos t prevalent?

Of the three constructs, it's one that makes the most sense for most
situations. The choice construct has one purpose, a choice between child
nodes. All is a bit unflexible, so rarely used IMHO. That leaves us with
sequence. So by default, it's the construct that most schemas tend to use.

Am I wrong in my thinking here?

Bryce K. Nielsen
SysOnyx, Inc. (www.sysonyx.com)
Makers of xmlLinguist, the EDI to XML Translator
http://www.sysonyx.com/products/xmllinguist