With an exciting new fall season ahead on broadcast TV, it’s time to welcome the latest series to the five major broadcast networks. And if 60 years of TV history is any hint, it will again repeat itself with a fair number of these rookies gone by Christmas.

But what’s different in the current TV universe: Broadcast TV’s fall crop is only a portion of the seamless 12-month harvest of programming that vies for the viewer’s attention and approval. Once upon a time, the fall season was a cage match between just three content providers — ABC, CBS and NBC. Today, those legacy networks not only do battle with Fox and CW, but also with scores of cable and streaming outlets.

If there’s an overriding trend in TV today, it’s this: There’s simply too much of it for any viewer to take stock of, much less support.

Even so, some things never change.

Like the reliance on medical shows. This fall will see the arrival of three more: “Code Black” (CBS, premiering Sept. 30), a latter-day “ER” that’s even busier and bloodier; “Chicago Med” (NBC, Nov. 20), the third dose of producer Dick Wolf’s latest trilogy that also includes “Chicago Fire” and “Chicago P.D.”; and “Rosewood” (Fox, Sept. 23), which, starring Morris Chestnut as a Miami pathologist, doubles as a crime drama with Dr. Rosewood using his medical wiles to bust bad guys. 

Comedies will be arriving in force, with “selfie-coms” — a subset reaching back to the real-life-based “I Love Lucy” — duly represented.

“Dr. Ken” (ABC, Oct. 2) stars Ken Jeong (“Community”) as a doctor flustered by the challenges of his practice and his home life. This show’s absence of laughs could expose him to viewers’ malpractice suits.

Little better is “Truth Be Told” (NBC, Oct. 16), whose creator, D.J. Nash, decided that, when packaged as a sitcom, his life wed to a Korean woman and with an African-American couple as their best friends would fuel witty observational banter and spark “a national conversation,” as Nash recently told reporters.

Other upcoming comedies are more promising. “Angel From Hell” (CBS, Nov. 5) finds Jane Lynch as a riotously unguarded guardian angel.

“Life in Pieces” (CBS, Sept. 21) is an ambitious comedy with a sprawling ensemble whose half-hour episodes are splintered into four related mini-stories.

And Fox’s back-to-back comedies “Grandfathered” and “The Grinder” (both premiering Sept. 29) star, respectively, 50-ish dreamboats John Stamos and Rob Lowe as 50-ish fellows whose dreamboat status remains undiminished, as do the comic chops of the actors who play them.

More unconventional humor-based shows also are on deck. “The Muppets” (ABC, Sept. 22) goes behind the scenes in mockumentary fashion for a “real-life” group portrait of these show-biz veterans as they produce a TV series.

“Crazy Ex-Girlfriend” (CW, Oct. 12) stars rising actress-writer-comedian Rachel Bloom in a magical comedy-with-music about a quirky young woman seeking romance a little too hard.

Maybe the fall’s riskiest new show, with TV’s bravest star presiding: “Best Time Ever,” NBC’s live comedy-variety hour (premiering Sept. 15), hosted by Neil Patrick Harris.

And horror blended with comedy is the formula for “Scream Queens” (Fox, Sept. 22), an anthology co-created by Ryan Murphy centered on homicide and hijinks at a college sorority house.

“Blood & Oil” (ABC, Sept. 27) is a brawny melodrama set in the North Dakota oil boom, with Don Johnson as its reigning oil baron. 

As usual in recent years, superheroes will be summoned in an effort to win viewers.

“Supergirl” (CBS, Oct. 26) is a good bet to soar thanks to winsome Melissa Benoist as Superman’s cousin who works as an assistant to a media mogul while she comes to terms with her super-humanness.

And “Heroes Reborn” (NBC, Sept. 24) revives “Heroes” from a decade ago as a 13-episode limited series whose heroes possess extraordinary powers — and now are going public with them.

But one enduring genre surpasses them all: mystery-and-crime. This fall, networks are plotting a range of intrigue:

“Quantico” (ABC, Sept. 27) is a lavish, twisted look at domestic terrorism and the select group of CIA recruits (sexy and skilled) who are tasked with preventing it.

“Wicked City” (ABC, Oct. 27) gets moody and violent with a murder case in the 1980s party-and-druggy world of L.A.’s Sunset Strip.

“The Player” (NBC, Sept. 24) plays a hyperactive, high-stakes game with a swashbuckling security expert who must try to prevent major crimes from happening while a band of high-rollers gambles on whether he can pull it off.

“Limitless” (CBS, Sept. 22), based on the 2011 film, focuses on a chronic slacker who discovers the brain-boosting power of a miracle drug but then is coerced by the FBI into using his mind-blowing abilities to solve cases for them.

“Minority Report” (Fox, Sept. 21), based on the Tom Cruise hit, is set in 2065 where a man who can see the future, including crime, forms an alliance with a cop to stop the murders he predicts.

Finally, there’s “Blindspot” (NBC, Sept. 21). Judging from the pilot, it’s a mashup between two dramas from years ago: “John Doe” and the tattooed hero of “Prison Break,” self-inked with the info he needs to gain escape.

In “Blindspot,” a young woman is discovered in Times Square with no memory but with unexplained tattoos covering her body. The FBI discovers that each tattoo contains a clue to a crime they, with her help, will have to solve.