Dickens is also the master of descriptive writing besides

MARK TWAIN’S WRITING STYLE
Mark Twain is one of the most important American writers of the 19th century. The style of Mark Twain is widely appreciated and influenced by numerous writers. Mark Twain started his literary career at “The Hannibal Journal.” Twain’s life at Hannibal and work as a riverboat pilot that assisted him developed his voice as a writer that is known to many people in the modern world. 
SOUTHWESTERN HUMOR
The writing style of Mark Twain is categorized as Southwestern humor. This is the regional style of humor that characterizes common language and also implied unpolished humor along with the dosses of cruelty. He employed characters and situations in which the tricksters achieved victory.
CHARACTERS
Twain has taken the majority of his characters from his real-life; particularly, he introduced characters as models of people he encountered at Hannibal. For instance, the characters such as riverboat, slave dealers, gamblers, and travelers are taken from Hannibal. In Huckleberry Finn, the character of Jim is a very famous Hannibal model.
THE DIVIDED NATURE OF TWAIN’S WORK
Perhaps, the writing style of Mark Twain is inimitable. The salient characteristic of his work is the accomplished use of dialect. However, he employed certain other techniques that are different from the other writers and give a unique touch to his works. For example, the satire of other writers appears to be lighter and less subtle than the social commentary of Twain. Without realizing the cynicism towards the society, the readers enjoyed the narration of apparently artless narrators. For example, in Connecticut Yankee, a simple line shows his divided nature of works and himself:
“The old abbot’s joy to see me was pathetic.”
The comedy of his narratives is weakened by the depth of seriousness and darkness work provides inconsistency to his works. This inconsistency and divided nature of his works show his own divided nature.
For example, in the novel The Adventures of Huckleberry Finn, in the descriptions of the adventures of the King and the Duke, the readers observe Twain’s criticism while showing the predatory nature of a man who exploits the people in their most vulnerable conditions. By using the artless narrator, Twain describes how Wilks’ family falls prey to two scoundrels after the death of their father. The slaves are immediately sold by the king. Huck observes the grief of the family at the loss of their servants as:
“I thought them poor girls and them n–s would break their hearts for grief; they cried around each other and took on, so it most made me down sick to see it. The girls said they hadn’t ever dreamed of seeing the family separated or sold away from the town. I couldn’t stand it all…if I hadn’t known the sale wasn’t no account and the n–s would be back home in a week or two.”