The phrase "relative newcomer" means someone or something that has arrived or been introduced recently compared to others who have been around for a longer time. Full definition
The shortlist includes established artists as well as relative newcomers and students fresh from art college. (artprojx.com)
While pharmaceuticals have been a vital boon to medicine, they are also relative newcomers. (functionalhealthnews.com)
These policies, many of which focused on reading issues, were developed on a political stage that admitted relative newcomers, thus increasing the size and diversity of the national reading policy community. (ciera.org)