Every year from July 2nd to June 15th of the next, the 30 MLB organizations combine to sign approximately 900 foreigners to initial uniform player contracts. Which means the Reds have approximately 9 weeks remaining in this years' signing period.
The Reds have signed the following 27 players. Their signing bonuses have not been released to the public (though fangraphs recently purchased this information and will eventually add it to their player pages). Nevertheless, we do know that none of the players received a bonus in excess of 300,000$ due to signing bonus restrictions they incurred from their acquisitions of Vladimir Gutierrez, Alfredo Rodriguez, and Jose Garcia.
The Reds probably aren't done signing eligible players, they typically sign at least a few more guys this late in the period (as pool $ is essentially use it or lose it - it doesn't carry over). We know, from the BOS, LAD, and MIA trades and the historical fact that nearly 75% of all IFA pool money is spent in the months of July and August; that they likely don't have much money remaining to spend. And it shouldn't be surprising to anyone to see them trade away the remainder in another minor league transaction soon.
Player Name - Pos - Date of Birth - Initial Signing - Bonus - Signed out of
Cabrera, Luis - IF - 1/18/2002 - 7/2/2018 - Unknown - Dominican Republic
De La Cruz, Elly - IF - 1/11/2002 - 7/2/2018 - Unknown - Dominican Republic
Fernandez, Iivin - IF - 9/8/2001 - 7/2/2018 - Unknown - Dominican Republic
Lora, Thomas - IF - 11/2/2001 - 7/2/2018 - Unknown - Dominican Republic
Perez, Lenniell - IF - 2/3/2002 - 7/2/2018 - Unknown - Dominican Republic
Torres, Esmil - IF - 1/18/2002 - 7/2/2018 - Unknown - Dominican Republic
Alcantara, Wilmer Miguel - OF - 12/20/2001 - 7/2/2018 - Unknown - Dominican Republic
Geraldo, Jefferson - OF - 7/31/2002 - 7/2/2018 - Unknown - Dominican Republic
Tamares, Junior - OF - 9/26/2001 - 7/2/2018 - Unknown - Dominican Republic
Rodriguez, Fraudy - C - 9/8/2001 - 7/2/2018 - Unknown - Dominican Republic
Aquino, Luis - P - 6/19/2001 - 7/2/2018 - Unknown - Dominican Republic
Mey, Luis - P - 6/24/2001 - 7/2/2018 - Unknown - Dominican Republic
Ros, Roberto - P - 9/8/2001 - 7/2/2018 - Unknown - Dominican Republic
Pineda, Jose - OF - 2/10/1998 - 8/31/2018 - Unknown - Dominican Republic
Aguilera, Gabriel - P - 8/19/2000 - 10/16/2018 - Unknown - Venezuela
Franco, Jose - P - 11/25/2000 - 10/16/2018 - Unknown - Venezuela
Yanez, Williams - P - 11/7/2001 - 10/16/2018 - Unknown - Venezuela
Rojas Jesus - P - 3/22/2002 - 12/29/2018 - Unknown - Venezuela
Salazar, Martin - P - 5/27/2000 - 12/29/2018 - Unknown - Venezuela
Vasquez, Armando - P - 5/4/2001 - 2/12/2019 - Unknown - Dominican Republic
Reyes, Many - P - 9/29/2000 - 2/16/2019 - Unknown - Dominican Republic (Born in USA but raised in D.R.)
Alcantara, Eddy - P - 2/11/2000 - 2/28/2019 - Unknown - Dominican Republic
Hiraldo, Jose - P - 8/24/2001 - 2/28/2019 - Unknown - Dominican Republic
Ovalles, Edison - C - 1/31/2002 - 3/3/2019 - Unknown - Venezuela
Castillo, Oswaldo - P - 6/11/2002 - 3/3/2019 - Unknown - Venezuela
Ramirez, Marwin - P - 9/10/2000 - 3/3/2019 - Unknown - Venezuela
Mendez, Willy - P - 3/27/2000 - 4/10/2019 - Unknown - Dominican Republic
*All 27 players are likely to begin the season in the Dominican Summer League, which starts in June.
**All of the above players will count towards the Reds 2018-19 international bonus pool (6,025,400$) which runs from July 2nd 2018 to June 15th 2019. Though, that bonus pool was reduced via trades (MIA SP Ryan Lillie - 750,000$ of pool space, BOS OF Lorenzo Cedrola - 1,500,000$ of pool space, and LAD SP James Marinan and LAD RP Aneurys Zabala - undisclosed$ of pool space).
(All international players not covered by the Rule 4 June Draft who turned 17 before September 1st, 2019 were eligible to sign during this period)