Books like Swamp Thing
Alan Moore, Len Wein, Bernie Wrightson
Swamp Thing is 136 pages, about 2 hours 30 minutes at 250 words a minute.
12 books to read next
How long each takes
Naruto, Vol 1 3.5 h 
Naruto 33 3.5 h 
Fun Home 4.3 h 
Naruto 05 3.4 h 
Amulet 4.1 h 
My Hero Academia, Vol. 1 3.5 h The Dragonet Prophecy 3.9 h 
Yotsuba&! Vol 1 4.1 h 
Preludes & Nocturnes 4.4 h 
Nimona 5.0 h 
Ultimate Spider-Man Vol. 6 3.2 h 
The Walking Dead, Vol. 1 2.6 h Bar height shows length. Estimated at 250 words a minute.