What I&#x27;d do is list as many as I can without making it look like random name dropping. Basically try to relate the skills to past jobs, projects, experiences etc. 
If iOS is your primary skill don&#x27;t be afraid to call yourself an &quot;iOS developer&quot;. You&#x27;re much more than that, but if somebody is looking for an iOS developer they want an iOS developer.<p>Is the difference between you and your colleagues just the skills and experiences listed? Same school, age , nationality, ethnicity etc? It could be that you&#x27;re being filtered out by something that seems completely arbitrary.