I cannot ascertain suspicions about the peers you are connected to, only the OrangeWire host you upload to. That address should arguably be blocked. It's used by bots, not regular file-sharers. Either use 66.212.0.0/16 or 66.212.143.0/24 in the WinMX filter ip blocklist if you wish to block them. You could also use either 66.212.*.* or 66.212.143.* instead which is equivalent.

(Edit: The GTK-G (2007) is a browse-BOT you posted in post #16.)

The meaning of BOT, scroll down to the malicious purposes section to get an idea what they are set to do. The BMI bots are designed to fill upload slots & download as much as possible. Other kinds of bots of course include spam-bots and DDoS bots. One type of spam-bot uses port 27016 and is probably the most prolific spammer on the Gnutella network.

Looks like they are all grabbing UPnP ports. If you could be bothered, you could try setting a specific port for WinMX and port forwarding that port with your router's settings.
Just a side note: UDP port checking is often unreliable because packets are often lost, so the program might show as being UDP firewalled when in fact it is not. On the other hand, TCP port tests are usually 100% reliable.

BearShare 5 is a good example of unreliable UDP port tests. The program might show as being UDP firewalled immediately or after an hour but then an hour later be not firewalled. ie: the UDP test packets were lost during testing (not getting a response from the peer it sent the packet to.) BearShare 5 does UDP & TCP port tests periodically, I am not sure about LimeWire & other programs but would probably be similar.
(One other reason for BearShare showing as UDP firewalled when it is not, is it sent the UDP test packets to firewalled hosts.)