Recommendations

Pretty similar to the grid in terms of being futuristic and the action and the time travel part. Also gets you hooked since the first ep.

It give the same vibe. In both, a disease spreads. And in both of these dramas, infectees of the disease has symptoms of hypothermia, nose bleeds and low body temperature.

same character backgrounds
older fl/younger ml
ml chases fl first
ml owner of fls workplace
fl trainer to ml
ml is naughty and rebellious
sml at par with fl
office romance

Escape from death, escape from the game and survive.
Both titles are about people who for one reason or another want to live, have nothing to lose, but have a reason to keep going.

If you like watching zombie series or movies you should check out this other title.
Both are about zombies, they have to find a solution to escape them, and there are good action scenes.
Have fun and empathize with the characters.

Skate is a short film documentary about the sport of skateboarding and those that helped revolutionize it in China; great back stories and old photography.

They aren't really that similar, but the main characters of Light on Me did a Cameo on Best mistake, (Episode 4). Both are really cute short shows though, and worth the watch.

Main protagonists are from different genders, but both are strange people who can't express themself well, while being a bit too blunt (or even considered rude) with others. Both of them make comfort with selling houses (although one of them is also an architect and the other is a seller). Both are found somewhat attractive, yet hard to approach and are considered probably hardly to get married... Yet many people pursue them.

Female centric drama about women in late 20s who will hit 30. Taught you age is only a number and it's totally okay if you're 30 and still not as successful as other people. Everyone has their own struggles and their pace! You will like it if you love watching slice of life drama. This drama is not only about dream, but also marriage life and single life. This drama was hit in mainland when it was airing.

watching no call no life reminded me so much of koizora, not strictly plot wise but more broadly in terms of feels.. which seemed really similar

If you really like FALLING INTO YOU SMILE then you will like Guo Fu Wang Zhe Shi Nu Sheng. Both of the drama are gaming and romance and the fl and ml in both drama are gamers.

Also a short film and speaks about the importance of people behind the scenes in many industries and how they shouldn't be forgotten. Both short films have the documentary feel.

About a twins boy & girl who was born in a kingdom but having twins is a big taboo so they decide to throw away the girl in The King's Affection but in The Emperor Owner of the Mask is about a King who switching place with a poor guy & wear a mask to hide that he had a scar in his face. Both drama is my favorite saeguk/period traditional drama & must watch dramas.

In My Love from the star the ML is an alien & FL is an actress. In Nine Tailed Fox aka Forbbiden Love the ML is a human & FL is a fox clan warrior. Is a bit different plot with a fantasy & romance story. Many people said the drama is so so but for me it's interesting to watch.

Same idea plot about a royal & a pauper switching place. Really interesting saeguk/traditional drama.