Having scored six goals from seven shots on target, Welbeck is on track to surpass the career-best 10 top-flight goals he scored last season.
Several different strikers have played second fiddle to Harry Kane in recent years, but none are currently enjoying the kind of purple patch Welbeck is.
“If you look at the forward options in Tuchel’s last squad there aren’t many obvious stand-ins for Harry Kane,” Alan Shearer told BBC Sport.
“Anthony Gordon, Jarrod Bowen, Bukayo Saka aren’t going to fill that role and Ollie Watkins hasn’t been firing for Aston Villa, so any English striker scoring goals in the Premier League is going to be talked about.
“It’s seven years since Welbeck’s last cap and he’s 35 this month but Tuchel isn’t worried about the future. His only focus is the six weeks of the World Cup so there’s no reason why Welbeck couldn’t be involved if he keeps scoring and stays injury free.”
Injuries have disrupted much of Welbeck’s career and arguably prevented him from adding to his 42 England caps, but he now founds himself in the beneficial position of being able to contribute goals on the pitch and leadership off it.
“I’m loving it here at Brighton, I’ve been very important, integral, on and off the pitch,” added Welbeck.
“I’m enjoying the senior role as well, I know how important it was for me as a youngster coming through having senior members you can speak to, come to for advice, it helped me massively.
“It’s come full circle now, I’m there to pass on advice to youngsters and help those around me. It’s been pretty seamless slipping into this role.”
Welbeck recently told BBC Radio 5 Live that “the door is always open” with England.
He added: “I know that if I’m called upon then I’d love to do the job, but honestly it doesn’t come into my thinking at the moment. I’m just focused on Brighton, winning games and picking up points.”
While Welbeck has played down his chances, Onuoha, who has played against Welbeck in the past, believes he knows Tuchel will be interested in him.
“You almost talk about him like he has never played for England before. He has done that job before,” Onuoha said.
“With the profile he has, he could definitely suit Tuchel’s style as such. For someone to be in that form, he knows he is going to be part of the conversation.”