Multiple services with different names use the config values from the last defined service

[ALERTua]

Defining:

tts:
  - platform: edge_tts
    service_name: edge_say
    language: en-US-ChristopherNeural

  - platform: edge_tts
    service_name: edge_say_ua
    language: uk-UA-PolinaNeural

Creates two services with the provided names correctly, but calling tts.edge_say uses the voice from edge_say_ua.
The config values should be different for each defined service.

[al-one]

This is controlled by the HA component, there is nothing custom components can do.