From Ep. 1406 (Courage). All the names of people who sent Tim encouraging replies to his preemptive message about Amy doing a clinic.

I went looking to see if the names have any particular significance. Google and the IMDb returned these results:

“Steve Pilon” is an Art Department fellow (IMDb didn’t show a specific tie to or credit for Heartland.)

No “Ramon Aguiar” matched anything to Heartland I could find on a cursory search. 

“Darcie Parkhurst” is an Assistant Director in Alberta; again, no specific tie to Heartland, but a recent Facebook post revealed this: “ADC [ Alberta District Council of The Director's Guild of Canada ] member AD Darcie Parkhurst and husband Vern lost their home in a house fire last Thursday. From their gofundme: 

"On the early morning of February 6th, Darcie and Vern’s home was consumed by fire. They thankfully were not in the home at the time of the fire nor was their beloved dog, Daysha, a 100lb Presa Canario. Sadly though they have lost everything they own to the fire. We know that many people in the community including family and friends want to support Darcie, Vern and Daysha during this difficult time; however we do also recognize that many people are facing hardships of their own throughout this time of a worldwide pandemic and we would be extremely grateful for any donation. Victims of fire face tremendous emotional stress and financial costs, we are hoping this fund will help alleviate some of the challenges Darcie and Vern face as they try to navigate through this tragedy to move on and rebuild their lives." Link to gofundme: https://bit.ly/3s0bS6A”

“Jerri Duce” is a horse wrangler for Heartland.

“Chad Thompson” (several people with that name on the IMDb with no ties to Heartland I could uncover).

“Simon Daykin” is credited for set design for 16 episodes of Heartland. (But I’m sure some of you knew that already!)