The phrase "and mostly easy to" is correct and usable in written English.
It can be used to describe something that is generally simple or straightforward, with some exceptions.
Example: "The instructions were clear and mostly easy to follow, making the process efficient."
Alternatives: "and generally simple to" or "and largely straightforward to".
His writing is insightful, humorous, and mostly easy to follow.
The recipes are clear and mostly easy to follow, though some ingredients, like white tomatoes, might require a trip to Rungis, not Union Square.
"His writing is insightful, humorous and mostly easy to follow", but "it is odd that he feels the need to tell just how little he cares".
It is easy to find and mostly easy to follow; starting at the visitors' center on the Boston Common, just follow the red-brick road (which turns into a painted red line in some places).
High string harmonics and harp, shuddering low woodwind and brass – alto flute and bass clarinet, bass trombone and tuba – and delicately scored percussion provided the sonic backdrop for the voices, mostly easy to hear even without surtitles.
His handful of other projects, though, are mostly easy to identify: his own home/studio, built in 1929 in a pure Le Corbusier style, and the 1935 college perched dramatically on a cliff above the town, a late-modern, L-shaped block with what appears to be a streamlined railway observation car (actually the games room) attached to the ground floor.
That means they all contain some cognitively dissonant elements like fantastic creatures or magic but are mostly easy to comprehend.
Therefore, putative hybrids between such species are mostly easy to identify.
For questions involving ease, the following four response options were used: 0 = not at all easy to follow/use, 1 = somewhat easy to follow/use, 2 = mostly easy to follow/use, 3 = very easy to follow/use.
Some blogging platforms are mostly easy to use, others are complicated sometimes, so choose what type you want.
