[campaignPete R-CT]

Cook Reports lists 91 seats that are competitive. Includes 41 that are currently DEM.

https://cookpolitical.com/ratings/house-race-ratings

Inside Elections has a shorter list of 68

Any seat not on those lists is all but certain not to flip this year.

[Coop]

I'm familiar with Mr. Cook and his ratings. Including these:

it is very, very unlikely Trump will win 270 electoral votes and the election.
https://cookpolitical.com/index.php/analysis/national/national-politics/many-are-afraid-say-it-not-close-race

Trump's Ceiling Is Too Low for Him to Be Reelected

If Mr. Cook's presidential assessment is correct, his House ratings will likely be accurate. I think his 2020 POTUS race assessment is manure-like, much like his 2016 POTUS declaration on 10/13/2016:

“Take a close look at the new Fox News poll,” tweeted Charlie Cook, publisher of the Cook Political Report. “This race is OVER.”

[Coop]

Former Marine Tyler Kistner of MN-02 outraised his Dem incumbent opponent in the 2nd quarter of this year. Haven't found info for the 3rd quarter yet.