As for suitable proposals here is the list:
Part is "one of
". Therefore suitable icon proposals are:
Number 1 and 2.
And there was one unfinished idea proposed:
Other proposals from @DeepSOIC, @yorik, @pablogil and @saso don't accurately describe the part as being a "one of". If the term used for the feature is wrong and something like a Composition should be used instead. First lead developer needs to acknowledge that and open a quest to change the term. After new icon quest request can be made to address the terminology change. Designer can't and shouldn't compensate for wrong terminology in my opinion. As that puts the designer in impossible situation if we request that. And the end user only ends up being confused regardless of the effort invested.