How to let NPC attack automatically creeper

I don't find creeper entities in c_excluded_spawner_entities

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c_excluded_spawner_entities

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Entities that will not show up in the Mob Spawner Placer entity selection list.

Add any mobs here that will crash if spawned via the vanilla mob-spawner (usually complex NBT-defined entities).

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c_excluded_spawner_entities {

Why would you be looking in the mob spawner exclusion list? That has absolutely nothing to do with npc's targetting mobs. Join the discord - go the FAQ channel - your query and many others are answered there.

oh，There have been help me out with this issue
look this

https://www.mcbbs.net/forum.php?mod=viewthread&tid=1061601&page=1#pid18573775

` AncientWarfareNpcTargeting.cfg
僵尸 骷髅 苦力怕 蜘蛛

Default targets for: player-owned soldier

S:combat.soldier.targets <
    Zombie
    Skeleton
    Creeper
    Spider
 >

比如，这是我自己的配置 ↓

古代战争的士兵攻击烈焰人记得不会掉烈焰棒
打史莱姆升级贼快
加入岩浆怪，僵尸猪人，烈焰人，可以让士兵帮你刷猪人刷怪塔，升级快。不过士兵不能使用掠夺剑
我做的士兵人力猪人塔
https://www.bilibili.com/video/BV18W411Z79a/

Default targets for: player-owned soldier

S:combat.soldier.targets <
    Zombie
    Skeleton
    Slime
    Blaze
    Creeper
    Spider
    PigZombie
    LavaSlime
 >

………………
…………
……

Default targets for: player-owned archer

S:combat.archer.targets <
    Zombie
    Skeleton
    Slime
    Blaze
    Creeper
    Spider
    PigZombie
    LavaSlime
    EnderDragon（这个末影龙其实加了也没用，末影龙免疫一般生物伤害）

 >

`