I did a bit of homework on "Welcome To My World" and wanted to post what I found. Seems interesting and a bit more there than I expected to find.... Some of this will be in direct quote :

The classic "Welcome To My World" by Jim Reeves has appeared in several Films and TV Shows, and advertisements.

FILM: Godzilla X King: The New Empire (2024) used in the opening scene and trailer.

T.V. : Better Call Saul (Season 5, Episode 1)
Mad Men (Season 4, Episode 11) and Night Sky (Prime Video Series)

ADVERTISEMENTS: Thompson's Holidays (UK 2008), Apple Arcade (2020) and Wickes (UK trailer 2020-2023).

While there isn't a single definitive number of all movies, its use in major Blockbusters and popular series highlights, it's enduring appeal certainly is evident across the media.

Just want to add a foot note here, and since I am Canadian, I want to add another song.

The Toronto camera company "Henry's Camera" featured a Jim Reeves song "Blue Sky" in their ads around 1990's and 2000s. As the company explained, "It evoked feelings of nostalgia, quality and capturing memories, fitting their brand perfectly." It was also mentioned by the company, that the Gentle Classic Sound of Reeves matched Henry's message of timeless photography and preserving moments.

Hope this helps and if anymore can be found please post it here. Thank you...Roy