ByMartrixX

This is intentional, Mojang has previously stated that items that can't be obtained in survival don't appear in the creative inventory to avoid confusion from new players

Using /data get entity @e[type=glow_squid,limit=1] gives this:

Glow Squid has the following entity data: {Brain: {memories: {}}, HurtByTimestamp: 0, Attributes: [{Base: 0.699999988079071d, Name: "minecraft:generic.movement_speed"}], Invulnerable: 0b, FallFlying: 0b, DarkTicksRemaining: 0, PortalCooldown: 0, AbsorptionAmount: 0.0f, FallDistance: 0.0f, DeathTime: 0s, HandDropChances: [0.085f, 0.085f], PersistenceRequired: 0b, UUID: [I; -852183328, -247447012, -1226603591, -688906928], Motion: [0.013942048884928226d, 0.012360158376395702d, 0.030300691723823547d], Health: 10.0f, LeftHanded: 0b, Air: 300s, OnGround: 0b, Rotation: [-35.71885f, 0.0f], HandItems: [{}, {}], ArmorDropChances: [0.085f, 0.085f, 0.085f, 0.085f], Pos: [1136.5999999940395d, 64.66497143893503d, 205.0955783687532d], Fire: -1s, ArmorItems: [{}, {}, {}, {}], CanPickUpLoot: 0b, HurtTime: 0s}

There is no NoAI tag even if it was summoned with it.

Same here