Hi @rickise77. No. None of that is correct.
HM-10 Bluetooth modules are not supported for use with Arduino IoT Cloud. The "I" in "IoT" stands for "Internet" so we are talking about devices that can connect to the Internet, such as ESP8266 boards, MKR WiFi 1010, Nano 33 IoT, or Nano RP2040 Connect.
It is true that you can name things whatever you like.
No. The Thing name is only a human friendly identifier. An ID like ae87baa6-ebc5-4771-891d-53e22c7b170b is used to identify the Thing to machines.
I guess you mean the Mega 2560? If so, that board is not supported for use with Arduino IoT Cloud.
You can learn about Arduino IoT cloud here: