fluid1.txt

<f:section name="Main">
    <f:for each="{content}" as="itemSectionObject" key="key" iteration="iteration">
        <v:variable.set name="?" />
        <v:variable.set name="?" />
        
        <fed:data.var name="objectType" value="{fed:data.func(func: 'key', arguments: {0: itemSectionObject})}" />
        <fed:data.var name="object" value="{fed:data.func(func: 'array_pop', arguments: {0: itemSectionObject})}" />

        <v:switch value="{objectType}">
            <v:case case="content1" break="TRUE">
RENDER CONTENT1
            </v:case>
            <v:case case="content2" break="TRUE">
RENDER CONTENT2
            </v:case>
        </v:switch>
    </f:for>
</f:section>

I think this should work to get the actual object data (untested as well): {v:variable.get(name: 'itemSectionObject.{objectType}') -> v:variable.set(name: 'object')}

This is quite ugly though. How does the array look like in full? Can there be more than one entry below key '1'?