Gnome Ranger and Ingrid's Back - incorrect publisher?
 

Gnome Ranger: http://hol.abime.net/2746

Ingrid's Back: http://hol.abime.net/2747

On checking all system versions, there is no indication of the publisher ever being Rainbird (Telecomsoft). The publisher was Level 9.

Level 9 were the guys who wrote them as you state. However certain versions may have been distributed by Rainbird (Telecomsoft) along with many of the Magnetic Scrolls adventures