Which denomination does Jesus belong to?
1 Cor 1:12-17 clearly prohibit saying I belong to Apollos or to Paul, which disapproves any denominations among the believers.
Of course, if the denominations have already happened and are unavoidable, I would defend it is a kind of diversity and liberty, against the oppressed unity of RCC. But it would be the best if we, the believers, can gather together only in the name of Jesus Christ who gave Himself for us as no one else died for us, neither Wesley, nor Luther nor Calvin, and we cannot find any Roman Presbyterian Church, Corinth Methodist Church, Ephesus Baptist church in the Bible.
So-called Plymouth Brethren do not call themselves as PB, but outsiders call them as such. They just name their churches by adding "Chapel" "Gospel Hall" or "Assembly" " Church" to the local area name. They have no head quarters because they believe their HQ is in Heaven and the Chairman of the Board is Jesus Christ.
But God has preserved them quite well and they are well spread throughout the world over 190 countries since it started from 1827 in Ireland/England, and they had the communication with the Believers in Communist Russia during the USSR era, and these days we still have many believers inside China, Tibet, in North Korea, in Kuwait and Iraq, and even in Saudi Arabia. We still have connections with them in Saudi Arabia, can you believe this? We do have many representations in Zambia, Ghana, and in Sahara desert. If you travel all around the world, you can check whether there is a church called Brethen.
We( so-called PB's) are not different from the fundamental Baptists but may be a little more strict than they are.
We practice Believers Baptism after hearing the testimony of salvation and interview, weekly Lord Supper, NO pastor, No clergy, Women's head covering or hats, No distinction of Clergy and Lay person calling all as Brothers and Sisters as Jesus taught us ( Mt 23:8-11)