The Ring General, Gunther has completed 300+ days as the Intercontinental Champion. Drew McIntyre and Sheamus tried their best but eventually failed to defeat the Imperium leader. Hence the question still stays, who can credibly dethrone Gunther?
The inaugural NXT Champion, Tyler Bate has been slightly forgotten by WWE Universe. Fans who saw Gunther and Bate in the same ring, regard their performance as "peak professional wrestling".
Pete Dunne is finally back in his old character. As "Butch", WWE were not utilizing the talent of the Englishman. Hence, he still has some business to settle with the Intercontinental Champion.
Currently, Seth Rollins is idle. At WrestleMania, he regained his form by defeating Logan Paul and giving KSI a lesson too. Hence, after the draft, the Visionary can challenge the Ring General for the Intercontinental Championship.
Solo Sikoa has only lost a single match in the main roster until now. However, he hasn't been involved in a title feud yet. Also, Solo's Samoan Spike is among the most credible finishers in the WWE right now. Therefore, him facing the Ring General would be a five-star contest.
Ilja Dragunov is the biggest underdog in NXT. Moreover, his athleticism and endurance are hard to cope with. Also, not to forget, Dragunov was the one who ended Gunthar's (then, Walter) gigantic title reign of 870 days.