So none of these names are necessarily end game, but boy names have been really hard for me and DH to agree on! And I don't like to ask close friends/family for their input because I don't want to hear negative opinions. Internet strangers, however...opine away!

Disclaimer: Carl as a middle name is after DH's grandfather, and I want it paired with a multi-syllable first name. Daniel is my dad's name and I would pair it with a one-syllable first name.
Re: Who wants to click some names?!
Nathan Carl
Ethan Carl
Seth Daniel
I like Nathaniel Carl, personally. A friend of mine's little one is named Nathaniel, and it's a lovely name!
Also, for Seth Daniel...I find it doesn't flow off my tongue very well when said with both names. I, personally, like when a middle name is easier to say following a first name
It's a BOY! Est. Due Date - October 17th
Married 8/27/2011
BFP #1 9/28/2011 DS born 5/22/2012
BFP #2 4/24/2013 m/c 4/25/2013 at 4w
BFP #3 1/31/2014 DD born 10/14/2014
BFP #4 1/20/2016 m/c 2/12/2014 at 7w2d
BFP #5 8/19/2016 DS2 born 4/29/2017
BFP #6 3/7/2018 EDD 11/18/2018
Ethan is pretty popular on this thread, but my concern is that it's also too popular in life. My MIL is a teacher and says she has several Ethans in each of her classes. It's a great name, but I don't want my son sharing his name with 5 other kids in class. Le sigh.