select --*
ListType,Count(*) HowMany, Min(IndexValue) MinIndexValue, Max(IndexValue) MaxIndexValue
from (SELECT Name, Description
,v.value('../@Index', 'varchar(100)') AS IndexValue
--,v.query('..') ParentNode
,case 
	when v.exist('../../SeqTabFmt') = 1 then 'SeqTabFmt'
	when v.exist('../../Box') = 1 then 'Box'
	when v.exist('../../CheckOffHeader') = 1 then 'CheckOffHeader'
	when v.exist('../../DocStyle') = 1 then 'DocStyle'
	when v.exist('../../Step') = 1 then 'Step'
	when v.exist('../../TransTypes') = 1 then 'TransTypes'
	when v.exist('../../PageStyle') = 1 then 'PageStyle'
	when v.exist('../../RightCheckOffBox') = 1 then 'RightCheckOffBox'
	when v.exist('../../CheckOff') = 1 then 'CheckOff'
	when v.exist('../../MetaSection') = 1 then 'MetaSection'
	else null
 end ListType
FROM Formats
--CROSS APPLY Data.nodes('.//Step/Font') TempXML(v)
CROSS APPLY Data.nodes('//@Index') TempXML(v))t1
group by ListType