Help identifying some Chinese? coins

Would be greatefull for any help/information on this coins. Thank you

Coin 1

Coin 2

Coin 3

Coin 4

Coin 5 (2x same coin)

Coin 6

Group Shot

For coin 1, the bumpy surface indicates that it is a modern reproduction. It is imitating a Chinese cash of emperor Qianlong (also known as Ch’ien Lung or Kao Tsung), 1736-1795 AD. Boo Chiowan (Board of Revenue) mint, Beijing

https://www.calgarycoin.com/reference/china/china8.htm#chien%20lung

Coin-2 - Copy of N#12421 (degenerated Boo)

Coin-3 - Evocation of a charme with a phoenix and a dragon. On obverse, characters don't seem to be the name of an actual emperor. Someting like: 材.通寶

Coin-4 - Enigmatic too : sort of Qing Yuan Tong Bao (Song dynasty) but with the characters in reverse order, and many characters on reverse, I can't decipher.

The two last coins are more orthodox copies (degenerated Boo, miss of ideograms): N#20632

[edit] I didn't see the very last coin which is an evocation of :

N#226306

that was supposed to be cast in iron (so not in a good shape now)

Two characters, whose purpose I don't know, have been added on observe

Appologies for the late reply, Thank you for your time.