There are 8 houses in our metro area and my travel league bowls at all 8.
They all run some variant of a 10 to 10 block. Some are run longer, some shorter, some with heavy oil, some lighter, some Anvilane, some AMF synthetics.
We bowl second shift so some are after 5 person men’s leagues, 5 person women’s leagues, mixed leagues, 3 person leagues, no leagues, open bowling, etc, etc, etc.
All have playable shots if you are willing to read the lanes and play the correct area of the lane. I have played from the 5 board to 25 board so far this year.