Personal preference depending on who’s available and then names mentioned in the post above would be
Howard -> Gronk -> Adams -> Cook
Full disclaimer, I love Howard this year.
I could see taking Adams over Gronk, but you already have Thomas and there’s a deep pool of WR in the later rounds and I’d rather secure an elite RB as the drop off is steep. I wouldn’t be comfortable with the names you mentioned as my RB2, maybe Collins I could live with, but that’s just me.
Gronk is Gronk, you’ll get an elite TE but allot a week or two of injury. Could always snag Kelce or Ertz in the next few rounds and have a top tier TE.