Continental volcanic arcs
A newly formed land consisting of an arc-shaped island chain is called a volcanic island arc. These volcanic islands are typically formed due to the convergence of tectonic plates where one plate subducts beneath another, leading to magma rising to the surface and creating a chain of volcanic islands.
It could be called an undersea island or submarisle.
Low islands
The island at the southwest tip of India is called "Lakshadweep." It is an archipelago consisting of 36 islands in the Arabian Sea.
The island is referred to by locals as the Big Island. The island is called Hawaii and is the most recently formed island on the chain.
The island in Crater, called Wizard Island was formed by small volcanic eruptions that occurred after the Crater Lake caldera formed but before the volcano went extinct.
a belt of volcanoes is called an island arc, they are formed from Hotspots/Mantle Plumes
New Zealand is an island nation consisting of multiple islands.
Primary succession
Britain, consisting of England, Wales and Scotland. There is also the island called the Isle of Man which is between Britain and Ireland.
The island group southeast of Florida is called the Bahamas. It is a nation consisting of more than 700 islands, islets, and cays in the Atlantic Ocean.
A new small island is formed (also called Surtsey).