Hi alilyfan.
I have a list of "early" tomatoes, but they are all small or smallish. Also, most are adapted to cool or cold climates, because that's what I searched for.
I think that, mostly, you can either have "early", or "big". Usually, not both in the same tomato. I often read comments like "this variety is relatively early for such a big tomato".
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ULTRA-EARLY & COLD-TOLERANT:
Glacier - ultra-early, cold-tolerant, SEMI-DET
Stupice - ultra-early, cold-tolerant, compact DET
EXTRA-EARLY & COLD-TOLERANT:
Oregon Spring - extra-early, very cold-tolerant, "plant 4 wks before last frost & protect only when there's frost"
Manitoba - extra-early, cold-tolerant, 3'-4' DET, "Canadian for colder climates"
Matina - extra-early, INDET, "dependable even in cold/wet summers"
Sub-Artic Plenty - extra-early, "Canadian", DET Allegedly developed in the 1940's by the U.S. Military to provide fresh tomatoes to their troops in Greenland.
Northern Delight - ultra-early, "for the Far North", 2' DET
Beaverlodge series - ultra-early, compact DET, containers
Sophie's Choice: Heirloom from Edmonton, Canada, introduced by Carolyn Male in 1997.
Extra early, flavorful. 2' DET vines suited to containers. 6-12 ounce globes red-orange outside and deep red flesh.
Strong disease resistance. Not heat-tolerant or drought-tolerant. Best production in cooler climates.
EXTRA-EARLY:
Early Cascade - (hybrid but seems pretty true) - early, short-summer, PNW, "reliable: sets fruit in any climate"
Early Wonder - extra-early, 3'-4' SEMI-DET, med red globe
Early Wonder - extra-early, SEMI-INDET
Siletz - extra-early, reliable, DET,
Sungold F1 - extra-early, 4'-8' INDET, containers, sweet orange cherry with 'tropical' flavor
Ildi - extra-early, yellow grape pear, 8'-10' INDET
Gold Nugget - extra-early, 2-3' DET, bland yellow cherry
EARLY:
Yellow Plum - early, productive even in cold, 4'-6' INDET, yellow cherry
Bloody Butcher - early, cool climate, 4'-6'
Maskabec - early, 18"-36" DET, 4-6 oz. red globe
Golden Rave (hybrid) - early, gold Roma plum6'-8' INDET
Husky Cherry Red - early, semi-DET or dwarf INDET
Sub Artic Cherry - early, DET, pink, "developed in Alberta for short seasons"
Early Cascade - early, short summer, red-orange
LESS EARLY:
Marmande - semi-early, cool climate, med-large red beefsteak type, full flavor
Santa Cherry / Santa Sweets - mid-season, tolerates cool summers, 4'-8' INDET
Morden Yellow - mid-late, Canadian for colder climates, 2'-3' DET, med yellow globe
Early Girl (hybrid) - semi-early, med red globe, flavorful