what character creation options would allow a PC the ability to "summon" immediately

What various racial, class and/or other character creation options would give a PC immediately access to any type of creature/spirt/anything summons? At level 1, that CAN attack

Can they be combined?

From any 5e Source/Setting that is WotC/Official would be best.

Thanks

Edit: not including the "cant attack" familiars/Unseen Servant

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EDIT 2 From replies:

Race

• Custom linage (TCE = +2 any, dark vision & free feat of Aberrant Dragonmark for +1 Con)
• Or Half Elf with Cantrip: Infestation, TCE = +2 any, +1 any other, +1 any different other
• Custom linage = Aberrant Dragonmark +1 Con (Cantrip = Infestation, 1st level spell = Shield)

Dark Gift

• Watchers, its/they are nearly like a passive perception familiar with the "Borrowed Eyes" feature
• RP the heck out of this being "spillage" from summoning mishaps

Classes

• Fathomless Warlock/Wildfire Druid MC
• Ideally start as druid for proficiencies, to Druid 2/Warlock 3 by character level 5
• Starting as warlock gives you immediate access to a summoned minion
• Shillelagh'ed quarterstaff and a shield are your melee go to (need be, as your a "full caster")

Inside Tier 1 (levels 1 to 5) play "summoner" abilities

1. Infestation (Instantaneous Cantrip Use)
2. Tentacle of the deep (True)
3. WildFire Spirit (True)
4. Pact of Chain Familiar = Imp (or w/e.... True)
5. Summon Beast/Shadow Spawn (Bestial Spirit/Shadow Spirt.... Spell Use)
6. Additional summon XYZ spells (Fey, Undead, Fiend, etc....Spell Use)

RP the Aberrant Dragonmark as weaken/thin "Sorcerous Draconic Bloodline" in the families past if Custom Linage

You have near FULL TIME access to 3 "Bound/Summoned Minions", plus any from spells

• Your first two ASI's are delayed to characters levels 6 & 8, it best
• You have 2 spell casting ability scores, Charisma and Wisdom (Dragonmark spells use Con)

27 Points, Point Buy

• Str 9 / Dex 14 / Con 13 / Int 8 / Wis 14 / Cha 14 PLUS RACIAL MODIFIERS &/OR +1 From Feat