Marx died in 1883. Gramsci was born in 1891.
There may be a timeline problem with your statements.
No problem whatsoever-— both of them were Marxists. And Gramsci’s cultural Marxism palpably worse on a very personal level— clambering socialism which is pure theft. Both of them derivative “philosophers” of leftist drivel.
And here you go on f’n Marx: Marx “raised” his six children in a tiny two room flat in London, having been banished from Germany, France and Belgium for his idiotic ideas. By 1858 three of his six children had died at the very least from the poverty he self-righteously forced them to endure. His infant son Heinrich’s death he called “a sacrifice to bourgeois misery”- can one even imagine the monster this clown was? His next infant, a daughter died two years later and his wife had to borrow money for a casket. Two of his daughters of the remaining committed suicide with their husbands (one husband chickened out) and the 3rd daughter died of tuberculosis at 39 before Marx did. Marx also had an illegitimate son raised by Engels as his “son” Freddy who was the only child to see the Russian Bolshevik revolt and was a machinist (an actual working trade).
Marx was an evil domineering tyrant with terrible hygiene, who hated people, except the grand abstract “workers” (Marx never worked a day in his life sponging off Engels and eventually his Manifesto). Not human and not humane like all Communists.