I will paste what I answered in a similar thread from !anime@ani.social a little while back that might be of interest to you:

I usually watch an OP once for a show and then skip it each time afterwards. That being said, there are a handful that I remember making the choice to always watch each episode. In no particular order:

• (NSFW) B Chiku Sentai SOX - “SHIMONETA: A Boring World Where the Concept of Dirty Jokes Doesn’t Exist” - I always laughed at the visuals of this more than anything. This show was wild.
• Onegai Muscle - “How Heavy Are The Dumbbells You Lift?”
• Idol - “Oshi no Ko”
• Zeitaku na Saji - “Campfire Cooking in Another World with my Absurd Skill”
• GO!!! - “Naruto”

Probably kino’s journey, kino no tabi, the original. Captures the spirit of calm wanderlust perfectly. Itinerance.i love the ending too.

Going through this exercise, I really like jazzy, hip hop, and, sometimes, heavy metal openings. (Still get chills from Attack on Titan’s “Rumbling” OP.) I’ve hyperlinked each song below for specificity (and nostalgia).

Going back 10+ years ago: Pokemon, Dragon Ball Z, Cowboy Bebop, Gintama, YuYu Hakusho, and One Piece are the anime openings that come to mind.

More recently: Love is War, Attack on Titan, Jujutsu Kaisen, Samurai Champloo, One Punch Man, My Hero Aca, Black Clover are all top tier.

Didn’t make the list, but shoutout to Bleach for having one of the most memorable soundtracks in all of anime.

Kaguya opening 1 for it’s smoothness

One Piece Opening 13, it has a very “complete” feeling for how encompassing the arc is

Gundam Wing Opening 2, is basically what made me enjoy music as a kid

Full Metal Alchemist (OG) opening 2. It’s got so much energy

Yu-gi-oh opening zero. For some reason it’s become so iconic that I think it’s more well known than the openings for the mainline series (I blame abridged but I remember listening to it before abridged came out)

Vinland Saga, Initial D, Cyberpunk Edgerunners

The song is named Tank.

Those horns are just perfect.

The end theme is also great.

Cowboy Bebop

Trigun

One I have doubts anyone else might mention is Lupin the Third.

Cowboy Bebop, obviously

The first season intro of Dr. Stone.

Drifters! Gospel of the Throttle goes so hard.

Can’t choose between these openings so here’s a small list:

• Golden time s2
• The worlds finest assassin
• Death parade or really any BRADIO work
• Dr. Stone s1 and s2
• OddTaxi
• The helpful fox senko

Definitely a tie with a few:

• Mushishi (The Sore Feet song and not Shiver, which is also great)

• Logos Naki World (Hellsing)

• Kibou no Kakera by Nana Kitade (Demsahita Powerpuff Girls Z op 1)

• Rewrite by Asian Kung-fu Generation (FMA '03 op 4)

• Detective Conan op 1 (the one from the Funimation English dub)

Cruel Angel Thesis - Evangelion
Kuusou Mesorogiwi - Mirai Nikki
Bacchikoi amd Heroes Come Back - Naruto Shippuden

Basically Everything from JoJo’s Bizarre Adventure. If I had to pick, sheet, I’d say Stone Ocean. Canzioni Preferite is the best non-opening song though!

Cowboy Bebop - Tank
Trigun - HT
Neon Genesis Evangelion - Cruel Angel’s Thesis
Lupin III Part 2 - Opening 1 bad video but best i could find sadly…
City Hunter - Love, Don’t Leave Me
Ping Pong the Animation - Tada Hitori
The Tatami Galaxy - Maigoinu to Ame no Beat
Gunbuster - OP
Samurai Champloo - Battlecry
Re: Cutie Honey - Cutie Honey Theme
Paranoia Agent - OP
Macross - OP
Tengen Toppa Gurren Lagann - Sorairo Days
Detective Conan - OP1 or OP3
Nadia the Secret of Blue Water - Blue Water
Dragon Ball Z - Cha La Head Cha La
Death Note - OP1
Jojo’s Bizarre Adventure Part 2 - OP

I could probably do more…

Now, endings are another story…

Attack on Titan - The Rumbling for me personally, had no right going as hard as it did!

Neon Genesis Evangelion’s intro is an absolute bop as well

Um…Sailor Moon?