Isn't there many group of angels like music group and that only one i can think of right now.
there are different types of angles with different responsibilities and their rank and stations are based on their positions.
The foremost angel, both in power and authority, is Michael, the archangel. Dan 10:13, Dan 12:1
very high among the angels in privileges and honor are the seraphs. Isa 6:2, 6 they are shown to be the ones in attendance at God’s throne.
There are Cherubs hold a special position among the angels. Ge 3:24; Eze 10:1-22 They are seen in Ezekiel’s vision as runners that accompanied the celestial chariot of God.
Then there are a vast number of angelic messengers who serve as a means of communication between God and man. they have also served as executioners of the divine purpose, be it protection and deliverance of God’s people or destruction of the wicked. A single angel killed 185,000 of the Assyrian army in one night...so they are all powerful beings.
Satan was said to be one of the Cherubs...Ezekiel describes him in Ezekiel 28:13-15
In E′den, the garden of God, you proved to be. Every precious stone was your covering, ruby, topaz and jasper; chrys′o‧lite, onyx and jade; sapphire, turquoise and emerald; and of gold was the workmanship of your settings and your sockets in you. In the day of your being created they were made ready. 14 You are the anointed cherub that is covering, and I have set you. On the holy mountain of God you proved to be. In the midst of fiery stones you walked about. 15 You were faultless in your ways from the day of your being created until unrighteousness was found in you
So there are different rankings of angles and they have different responsibilities in the heavens.