Use in and out footwork and throw combination punches at mid-range from variety of angles. Manny Pacquiao could do the same thing. Usyk could do the same thing. Boxers who specialize in combination punching from variety of angles + mid-range fighting + use pendulum steps with constant changes in rhythm will give any fighter fits in a 1VS1 combat, assuming striking is involved, whether that be MMA or Muay Thai or kickboxing. Outside boxing will get you destroyed by leg-kicks from a Muay Thai specialist. Inside boxing will get you destroyed by a wrestler or a Muay Thai specialist clinching you and unleashing knees and elbows. Boxer's biggest advantage over any other striking martial artist is at mid-range and pendulum steps. Guys like Lomachenko and Pacquiao and to some extent Usyk fit that bill. They'd at least be competitive in any form of 1vs1 combat that involves striking.