The lyrical Infinite theme is much trickier to combine with this for several reasons: pitch, formatting, and volume. Not to mention that this combo is one that many have done already. However, I just had to do my own version and the effort was WORTH IT!!! Obviously snippets of it could be potentially better. The volume and formatting was especially tricky in some parts, but I think this is the best you'll ever see me do with this combination!
A Mashup of "Find Your Flame" from Sonic Frontiers, and "Infinite" along with snippets of "Infinite 1" and "Infinite 2" from Sonic Forces
Small snippet of Skynut's Phantom Infinite theme was used: https://www.youtube.com/watch?v=M-1LniMtrvc
Infinite background by LegendQueen01 on DeviantArt
Knight photo by Hunicrio on DeviantArt
Infinite photo by Sonic Forces Overclocked on Twitter