I tested this and the answer is A 1 2 3 B C, as long as all of the actions are synchronous — if any actions are asynchronous (e.g. a Save Models or Re-query Models action), then they may occur later than they would if they are synchronous.

The reason is that all of the Model Actions happen immediately after their triggering event, e.g. when a new row is created, all Model Actions defined on the “When new row is created” event will happen immediately after that occurs. Any subsequent actions in an Action Sequence that included Create new Row would occur later.

Here is the XML for a test page: just click “New Account Test”.

<skuidpage unsavedchangeswarning="yes" showsidebar="true" showheader="true" tabtooverride="Account">   

   <models>

      <model id="Account" limit="10" query="false" createrowifnonefound="false" sobject="Account">

         <fields>

            <field id="Name"/>

         </fields>

         <conditions/>

         <actions>

            <action>

               <actions>

                  <action type="updateRow" fieldmodel="Account" field="Name" enclosevalueinquotes="true" value="{{{Name}}} 1"/>

                  <action type="updateRow" fieldmodel="Account" field="Name" enclosevalueinquotes="true" value="{{{Name}}} 2"/>

                  <action type="updateRow" fieldmodel="Account" field="Name" enclosevalueinquotes="true" value="{{{Name}}} 3"/>

               </actions>

               <events>

                  <event>row.created</event>

               </events>

            </action>

         </actions>

      </model>

   </models>

   <components>

      <pagetitle model="Account">

         <maintitle>

            <template>{{Model.labelPlural}}</template>

         </maintitle>

         <subtitle>

            <template>Home</template>

         </subtitle>

         <actions>

            <action type="savecancel"/>

         </actions>

      </pagetitle>

      <skootable showconditions="true" showsavecancel="false" searchmethod="server" searchbox="true" showexportbuttons="false" pagesize="10" createrecords="false" model="Account" mode="read">

         <fields>

            <field id="Name" allowordering="true"/>

            <field id="CreatedDate" allowordering="true" valuehalign="" type=""/>

         </fields>

         <rowactions>

            <action type="edit"/>

            <action type="delete"/>

         </rowactions>

         <massactions usefirstitemasdefault="true">

            <action type="massupdate"/>

            <action type="massdelete"/>

         </massactions>

         <views>

            <view type="standard"/>

         </views>

         <actions defaultlabel="Global Actions" defaulticon="sk-icon-magic" usefirstitemasdefault="true">

            <action type="multi" label="New Account Test" icon="sk-icon-magic">

               <actions>

                  <action type="createRow" model="Account" appendorprepend="prepend" defaultmodefornewitems="edit">

                     <defaults>

                        <default type="fieldvalue" field="Name" enclosevalueinquotes="true" value="Test"/>

                     </defaults>

                  </action>

                  <action type="updateRow" fieldmodel="Account" field="Name" enclosevalueinquotes="true" value="{{{Name}}} B"/>

                  <action type="updateRow" fieldmodel="Account" field="Name" enclosevalueinquotes="true" value="{{{Name}}} C"/>

               </actions>

            </action>

         </actions>

      </skootable>

   </components>

   <resources>

      <labels/>

      <css/>

      <javascript/>

   </resources>

</skuidpage>

Thanks, Zach! Nice way to perform a quick test.