While Luis Severino was showing off his electric wares in The Bronx on Wednesday night, two more from the Yankees’ collection of “untouchable” prospects were enjoying eye-opening nights in the minors.

Speedy 20-year-old shortstop hope Jorge Mateo was terrific in his debut with High-A Tampa, going 4-for-6 out of the leadoff spot with a triple and a stolen base. Mateo was promoted this week after posting a .268/.338/.378 slash line with 71 steals in 96 games for Low-A Charleston.

Meanwhile, Triple-A first baseman Greg Bird crushed two home runs and a triple in a win for Scranton/Wilkes-Barre, where Severino spent much of the summer.

“Seeing him up there tonight was awesome. We were keeping a close eye on him,” Bird said, according to MILB.com. “Obviously, that’s where I want to be, you can’t deny that. I’m just trying to go out every day and work hard and let everything else take care of itself.”

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The two studs are part of a dream-scenario latter-day Yankees “Core Four” along with Severino and outfield monster Aaron Judge. General manager Brian Cashman held on tightly to the talented youngsters during a mostly quiet trade deadline. The Yankees did offer Mateo to the Padres in a package for closer Craig Kimbrel, according to The Post’s Joel Sherman, but the deal got little traction.