I agree that it likely will be Gray. It makes the most sense. But I would love for the Joe Ryan Experience to make it back to back years. As someone else in the comments noted, Ryan is the most likely to be on the team for years to come. The 2020s could be looked back at as the Joe Ryan decade.
When the Lopez trade news broke, the first thing I saw people on twitter yelling about was his home/road splits and that he must therefore not be that good or be getting lucky or whatever. This provided some helpful context to that argument for me. I don't think anyone mistakes Pablo for a true Ace, but hopefully we'll get more of that 3.00 ERA and strikeout-per-inning guy!