Village and ruined portal (for speedruns)
Java Edition 26.3. Checked with Seeder's engine on .
The classic speedrun start, even if I never tried speedrunning once. Loot the village for food, beds and iron, light the ruined portal and you're in the Nether. Let me know if any of these seeds help!
Both are close to spawn on every seed. You should also see if the portal is a giant one, buried, or in an air pocket.

1 From spawn: a plains village right there and a giant ruined portal right there.
Seed103400251147754
What X, Z Distance VillagePlains village 32, 48 0 blocks Ruined PortalGiantUndergroundAir pocket 32, 32 16 blocks Shipwreck -80, 48 112 blocks Trail Ruin 112, 288 253 blocks Trial Chamber -240, 256 342 blocks Stronghold -732, -2140 2.3k blocks Spawn in a plains at 32, 48, around Y 67.

2 From spawn: a desert village right there and a giant ruined portal 66 blocks south.
Seed1393324449629368
What X, Z Distance VillageDesert village 0, 0 16 blocks Ruined PortalGiantDesert portal 0, 64 66 blocks Jungle Pyramid -144, 160 226 blocks Trial Chamber 176, 176 238 blocks Desert Pyramid -224, 32 242 blocks Trail Ruin 64, 320 324 blocks Stronghold -556, -1468 1.6k blocks Spawn in a desert at 16, 0, around Y 66.

3 From spawn: a savanna village 32 blocks south and a ruined portal 80 blocks south-east.
Seed213537058688244
What X, Z Distance VillageSavanna village 0, 32 32 blocks Ruined Portal 64, 48 80 blocks Shipwreck -80, 112 138 blocks Jungle Pyramid -304, -176 351 blocks Trial Chamber 304, 176 351 blocks Outpost 336, 176 379 blocks Stronghold -1180, -764 1.4k blocks Spawn in a savanna at 0, 0, around Y 70.

4 From spawn: a taiga village 91 blocks south-east and a giant ruined portal 58 blocks south-east.
Seed186307584437646
What X, Z Distance VillageTaiga village 64, 64 91 blocks Ruined PortalGiant 48, 32 58 blocks Trial Chamber 192, 64 202 blocks Trail Ruin 272, -240 363 blocks Abandoned Camp -384, 80 392 blocks Stronghold 340, -1308 1.4k blocks Spawn in a swamp at 0, 0, around Y 80.

5 From spawn: a taiga village 36 blocks south-east and a ruined portal 129 blocks south.
Seed3481099971675538
What X, Z Distance VillageTaiga village 16, 32 36 blocks Ruined PortalUndergroundAir pocket 16, 128 129 blocks Trail Ruin 32, 48 58 blocks Abandoned Camp 112, 160 195 blocks Outpost 208, 96 229 blocks Ancient City 48, -240 245 blocks Trial Chamber -272, 224 352 blocks Stronghold -1052, 1012 1.5k blocks Spawn in a meadow at 0, 0, around Y 104.

6 From spawn: a snowy village 80 blocks south-east and a ruined portal 80 blocks south-east.
Seed613114469485949
What X, Z Distance VillageSnowy village 48, 64 80 blocks Ruined Portal 64, 48 80 blocks Trail Ruin 32, -160 163 blocks Ancient City 240, 0 240 blocks Igloo 16, 272 272 blocks Trial Chamber 304, 176 351 blocks ShipwreckBeached 80, 384 392 blocks Stronghold -1420, 612 1.5k blocks Spawn in snowy plains at 0, 0, around Y 68.

7 From spawn: a taiga village 80 blocks east and a ruined portal right there.
Seed667406256774050
What X, Z Distance VillageTaiga village 80, 0 80 blocks Ruined Portal 16, 16 23 blocks Trail Ruin -144, 48 152 blocks Trial Chamber 240, 80 253 blocks Abandoned Camp -288, 96 304 blocks Stronghold -1308, -828 1.5k blocks Spawn in a taiga at 0, 0, around Y 68.

8 From spawn: a taiga village 72 blocks south-east and a ruined portal 148 blocks south-east.
Seed1448753197383953
What X, Z Distance VillageTaiga village 16, 80 72 blocks Ruined PortalUndergroundAir pocket 80, 128 148 blocks IglooWith basement 80, -176 215 blocks Trial Chamber 240, 16 256 blocks Shipwreck -288, 112 288 blocks Abandoned Camp 144, 256 288 blocks Stronghold -1164, 564 1.3k blocks Spawn in a forest at -16, 16, around Y 65.

9 From spawn: a desert village 91 blocks south-east and a giant ruined portal 101 blocks east.
Seed197911054534065
What X, Z Distance VillageDesert village 64, 64 91 blocks Ruined PortalGiantDesert portal 96, 32 101 blocks Desert Pyramid 192, 48 198 blocks Trial Chamber -240, 96 258 blocks Stronghold -1276, 260 1.3k blocks Spawn in badlands at 0, 0, around Y 67.

10 From spawn: a taiga village 80 blocks south-east and a ruined portal 122 blocks south-east.
Seed700138229128108
What X, Z Distance VillageTaiga village 48, 64 80 blocks Ruined Portal 48, 112 122 blocks Abandoned Camp 16, 128 129 blocks Trial Chamber 240, 112 265 blocks Ancient City -224, 144 266 blocks Stronghold -444, 1428 1.5k blocks Spawn in a grove at 0, 0, around Y 146.
Need more?
These ten seeds are the best out of thousands I searched. Seeder can find as many as you like, given the right premises, with your own range and in your favourite version.
Search in the finderGood to know
- The ruined portal's chest often has flint and steel or a fire charge, so check it before you look for a way to light the portal.
Questions
What is a ruined portal?
A broken Nether portal with a chest next to it. Fix the missing obsidian and light it. Minecraft Wiki
Can I use these seeds in a speedrun?
In set-seed categories, yes. Random-seed runs don't allow picking a seed, but these are great for practising routes.