Warnock saw the Blades go in at the break a goal up on his return to Bramall Lane after Richard Cresswell's fine header flew into the top corner.
But impressive Moroccan midfielder Adel Taarabt pounced on some dithering defending by Marcel Seip to slide home a 49th-minute equaliser for the Londoners.
Warnock, who departed previous club Crystal Palace after they had slipped into administration, said: "I'd like a couple more leaders, we've not too many if I'm honest, but we've got six loanees so I can't see us getting anybody this season really.
"But it will be interesting for next season. I'm looking forward to it, obviously once we've got enough points, or we miss out (on the play-offs).
"It's almost like winning the pools for me and I don't mean my salary. I'm on about circumstances and everything that's gone around in the last 12 months.
"I feel like I've just had a weight lifted off my shoulders and I can concentrate on what I'm good at now and that's managing a football team rather than everything else that I've had to put up with.
"I'm delighted to be here and looking forward to having a right good go. The colours are a bit strange for me though."
Warnock hailed his current Rangers squad as the most talented he had worked with, especially Taarabt, and was delighted to see the addition of "a bit of northern spirit" having an immediate effect.
He added: "Taarabt is working ever so hard and he's got so much skill. It takes a certain type of manager, I think you would call Taarabt an enigma.
"You could, as a manager look at his minuses, but I look at his positives. He's been the best player on the pitch since the first training session.
"People said he was a liability, but I've not agreed with that. I've never had ability like this group of players really.
"We probably lack a bit of Sheffield steel, but I thought we showed that today."
In contrast, problems continue to mount for his former club.
Jamie Ward, Ched Evans and Lee Williamson all missed out after picking up injuries in the midweek defeat at Peterborough, Kyle Bartley was struck down by food poisoning on Friday night and now skipper Chris Morgan will miss out through suspension after reaching five bookings.
Blades assistant manager Sam Ellis said: "It's two points dropped from our point of view and with Morgan getting booked, he's out for two games now.
"And with the injuries we've got, we're in a bit of a nightmare to be honest and that's not moaning, that's a fact.
"We're so short of players it looks like we're going to have to see if we're able to get a loan in for Tuesday (against Blackpool), there's no doubt about that."
Ellis was left to rue a glaring late miss by substitute Darius Henderson when the Blades striker appeared to freeze at the far post.
"We're not happy with a point," he added. "We dominated to a certain extent and created the best chance you could have wished for in the 89th minute and we couldn't stick it away."